149383951 has 4 divisors (see below), whose sum is σ = 153027504. Its totient is φ = 145740400.

The previous prime is 149383931. The next prime is 149383961. The reversal of 149383951 is 159383941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149383951 - 2¹⁹ = 148859663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149383898 and 149383907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149383921) 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, 1821715 + ... + 1821796.

It is an arithmetic number, because the mean of its divisors is an integer number (38256876).

Almost surely, 2^149383951 is an apocalyptic number.

149383951 is a deficient number, since it is larger than the sum of its proper divisors (3643553).

149383951 is an equidigital number, since it uses as much as digits as its factorization.

149383951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3643552.

The product of its digits is 116640, while the sum is 43.

The square root of 149383951 is about 12222.2727428249. The cubic root of 149383951 is about 530.6008979097.

The spelling of 149383951 in words is "one hundred forty-nine million, three hundred eighty-three thousand, nine hundred fifty-one".