149701493 has 4 divisors (see below), whose sum is σ = 151183788. Its totient is φ = 148219200.

The previous prime is 149701477. The next prime is 149701501. The reversal of 149701493 is 394107941.

149701493 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 an emirpimes, since its reverse is a distinct semiprime: 394107941 = 29 ⋅13589929.

It can be written as a sum of positive squares in 2 ways, for example, as 109035364 + 40666129 = 10442^2 + 6377^2 .

It is a cyclic number.

It is not a de Polignac number, because 149701493 - 2⁴ = 149701477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149701463) 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, 740996 + ... + 741197.

It is an arithmetic number, because the mean of its divisors is an integer number (37795947).

Almost surely, 2^149701493 is an apocalyptic number.

It is an amenable number.

149701493 is a deficient number, since it is larger than the sum of its proper divisors (1482295).

149701493 is a wasteful number, since it uses less digits than its factorization.

149701493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482294.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 149701493 is about 12235.2561477069. The cubic root of 149701493 is about 530.9765938402.

The spelling of 149701493 in words is "one hundred forty-nine million, seven hundred one thousand, four hundred ninety-three".