151369281 has 72 divisors (see below), whose sum is σ = 266048640. Its totient is φ = 82627776.

The previous prime is 151369271. The next prime is 151369289. The reversal of 151369281 is 182963151.

151369281 is a `hidden beast` number, since 1 + 513 + 69 + 2 + 81 = 666.

It is not a de Polignac number, because 151369281 - 2⁶ = 151369217 is a prime.

It is a super-2 number, since 2×151369281² = 45825318460913922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (151369289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1388655 + ... + 1388763.

It is an arithmetic number, because the mean of its divisors is an integer number (3695120).

Almost surely, 2^151369281 is an apocalyptic number.

It is an amenable number.

151369281 is a deficient number, since it is larger than the sum of its proper divisors (114679359).

151369281 is a wasteful number, since it uses less digits than its factorization.

151369281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 233 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 151369281 is about 12303.2223827744. Note that the first 3 decimals coincide. The cubic root of 151369281 is about 532.9411433989.

The spelling of 151369281 in words is "one hundred fifty-one million, three hundred sixty-nine thousand, two hundred eighty-one".