151081644 has 24 divisors (see below), whose sum is σ = 402884608. Its totient is φ = 43166160.

The previous prime is 151081643. The next prime is 151081729. The reversal of 151081644 is 446180151.

It is not an unprimeable number, because it can be changed into a prime (151081643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 899212 + ... + 899379.

Almost surely, 2^151081644 is an apocalyptic number.

151081644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

151081644 is an abundant number, since it is smaller than the sum of its proper divisors (251802964).

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

151081644 is a wasteful number, since it uses less digits than its factorization.

151081644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798605 (or 1798603 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 151081644 is about 12291.5273257639. The cubic root of 151081644 is about 532.6033584552.

The spelling of 151081644 in words is "one hundred fifty-one million, eighty-one thousand, six hundred forty-four".