149219437 has 4 divisors (see below), whose sum is σ = 151748640. Its totient is φ = 146690236.

The previous prime is 149219431. The next prime is 149219443. The reversal of 149219437 is 734912941.

149219437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (149219431) and next prime (149219443).

It is a cyclic number.

It is not a de Polignac number, because 149219437 - 2³ = 149219429 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149219437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149219431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1264513 + ... + 1264630.

It is an arithmetic number, because the mean of its divisors is an integer number (37937160).

Almost surely, 2^149219437 is an apocalyptic number.

It is an amenable number.

149219437 is a deficient number, since it is larger than the sum of its proper divisors (2529203).

149219437 is an equidigital number, since it uses as much as digits as its factorization.

149219437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529202.

The product of its digits is 54432, while the sum is 40.

The square root of 149219437 is about 12215.5407985074. The cubic root of 149219437 is about 530.4060457870.

The spelling of 149219437 in words is "one hundred forty-nine million, two hundred nineteen thousand, four hundred thirty-seven".