149216474 has 12 divisors (see below), whose sum is σ = 246022602. Its totient is φ = 67825560.

The previous prime is 149216471. The next prime is 149216489. The reversal of 149216474 is 474612941.

149216474 = 1820² + 1821² + ... + 1863².

It can be written as a sum of positive squares in only one way, i.e., 124166449 + 25050025 = 11143^2 + 5005^2 .

It is a super-2 number, since 2×149216474² = 44531112225985352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon 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 5 ways as a sum of consecutive naturals, for example, 308057 + ... + 308540.

Almost surely, 2^149216474 is an apocalyptic number.

149216474 is a deficient number, since it is larger than the sum of its proper divisors (96806128).

149216474 is a wasteful number, since it uses less digits than its factorization.

149216474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616621 (or 616610 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 149216474 is about 12215.4195179699. The cubic root of 149216474 is about 530.4025350658.

The spelling of 149216474 in words is "one hundred forty-nine million, two hundred sixteen thousand, four hundred seventy-four".