149037609 has 16 divisors (see below), whose sum is σ = 227352960. Its totient is φ = 85071360.

The previous prime is 149037593. The next prime is 149037617. The reversal of 149037609 is 906730941.

It is not a de Polignac number, because 149037609 - 2⁴ = 149037593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149037689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18937 + ... + 25625.

It is an arithmetic number, because the mean of its divisors is an integer number (14209560).

Almost surely, 2^149037609 is an apocalyptic number.

It is an amenable number.

149037609 is a deficient number, since it is larger than the sum of its proper divisors (78315351).

149037609 is a wasteful number, since it uses less digits than its factorization.

149037609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7760.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 149037609 is about 12208.0960432002. The cubic root of 149037609 is about 530.1905200895.

The spelling of 149037609 in words is "one hundred forty-nine million, thirty-seven thousand, six hundred nine".