151851988 has 12 divisors (see below), whose sum is σ = 266801472. Its totient is φ = 75623000.

The previous prime is 151851979. The next prime is 151851989. The reversal of 151851988 is 889158151.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151851989) 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, 74620 + ... + 76627.

It is an arithmetic number, because the mean of its divisors is an integer number (22233456).

Almost surely, 2^151851988 is an apocalyptic number.

It is an amenable number.

151851988 is a deficient number, since it is larger than the sum of its proper divisors (114949484).

151851988 is a wasteful number, since it uses less digits than its factorization.

151851988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151502 (or 151500 counting only the distinct ones).

The product of its digits is 115200, while the sum is 46.

The square root of 151851988 is about 12322.8238646830. The cubic root of 151851988 is about 533.5070474058.

The spelling of 151851988 in words is "one hundred fifty-one million, eight hundred fifty-one thousand, nine hundred eighty-eight".