151651644 has 12 divisors (see below), whose sum is σ = 353853864. Its totient is φ = 50550544.

The previous prime is 151651637. The next prime is 151651649. The reversal of 151651644 is 446156151.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×151651644² = 45996442255805472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151651649) 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, 6318807 + ... + 6318830.

It is an arithmetic number, because the mean of its divisors is an integer number (29487822).

Almost surely, 2^151651644 is an apocalyptic number.

It is an amenable number.

151651644 is an abundant number, since it is smaller than the sum of its proper divisors (202202220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151651644 is a wasteful number, since it uses less digits than its factorization.

151651644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12637644 (or 12637642 counting only the distinct ones).

The product of its digits is 14400, while the sum is 33.

The square root of 151651644 is about 12314.6922007820. The cubic root of 151651644 is about 533.2723188881.

The spelling of 151651644 in words is "one hundred fifty-one million, six hundred fifty-one thousand, six hundred forty-four".