149216475 has 12 divisors (see below), whose sum is σ = 246704696. Its totient is φ = 79582080.

The previous prime is 149216471. The next prime is 149216489. The reversal of 149216475 is 574612941.

It is not a de Polignac number, because 149216475 - 2² = 149216471 is a prime.

It is a super-2 number, since 2×149216475² = 44531112822851250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149216471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 994702 + ... + 994851.

Almost surely, 2^149216475 is an apocalyptic number.

149216475 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149216475 is a deficient number, since it is larger than the sum of its proper divisors (97488221).

149216475 is a wasteful number, since it uses less digits than its factorization.

149216475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989566 (or 1989561 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 149216475 is about 12215.4195589018. The cubic root of 149216475 is about 530.4025362507.

The spelling of 149216475 in words is "one hundred forty-nine million, two hundred sixteen thousand, four hundred seventy-five".