151889281 has 2 divisors, whose sum is σ = 151889282. Its totient is φ = 151889280.

The previous prime is 151889273. The next prime is 151889299. The reversal of 151889281 is 182988151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99181681 + 52707600 = 9959^2 + 7260^2 .

It is a cyclic number.

It is not a de Polignac number, because 151889281 - 2³ = 151889273 is a prime.

It is a super-2 number, since 2×151889281² = 46140707365393922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151889251) 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 as a sum of consecutive naturals, namely, 75944640 + 75944641.

It is an arithmetic number, because the mean of its divisors is an integer number (75944641).

Almost surely, 2^151889281 is an apocalyptic number.

It is an amenable number.

151889281 is a deficient number, since it is larger than the sum of its proper divisors (1).

151889281 is an equidigital number, since it uses as much as digits as its factorization.

151889281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 43.

The square root of 151889281 is about 12324.3369395680. The cubic root of 151889281 is about 533.5507181101.

The spelling of 151889281 in words is "one hundred fifty-one million, eight hundred eighty-nine thousand, two hundred eighty-one".