151811641 has 2 divisors, whose sum is σ = 151811642. Its totient is φ = 151811640.

The previous prime is 151811593. The next prime is 151811651. The reversal of 151811641 is 146118151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151782400 + 29241 = 12320^2 + 171^2 .

It is a cyclic number.

It is not a de Polignac number, because 151811641 - 2²⁷ = 17593913 is a prime.

It is a super-2 number, since 2×151811641² = 46093548686225762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151811651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75905820 + 75905821.

It is an arithmetic number, because the mean of its divisors is an integer number (75905821).

Almost surely, 2^151811641 is an apocalyptic number.

It is an amenable number.

151811641 is a deficient number, since it is larger than the sum of its proper divisors (1).

151811641 is an equidigital number, since it uses as much as digits as its factorization.

151811641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 28.

The square root of 151811641 is about 12321.1866717455. The cubic root of 151811641 is about 533.4597923653.

Adding to 151811641 its reverse (146118151), we get a palindrome (297929792).

It can be divided in two parts, 15 and 1811641, that added together give a triangular number (1811656 = T₁₉₀₃).

The spelling of 151811641 in words is "one hundred fifty-one million, eight hundred eleven thousand, six hundred forty-one".