1901242531 has 2 divisors, whose sum is σ = 1901242532. Its totient is φ = 1901242530.

The previous prime is 1901242507. The next prime is 1901242547. The reversal of 1901242531 is 1352421091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1901242531 - 2¹¹ = 1901240483 is a prime.

It is a super-2 number, since 2×1901242531² = 7229446323366571922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1901242531.

It is not a weakly prime, because it can be changed into another prime (1901242561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950621265 + 950621266.

It is an arithmetic number, because the mean of its divisors is an integer number (950621266).

Almost surely, 2^1901242531 is an apocalyptic number.

1901242531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901242531 is an equidigital number, since it uses as much as digits as its factorization.

1901242531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1901242531 is about 43603.2399140247. The cubic root of 1901242531 is about 1238.8322623914.

The spelling of 1901242531 in words is "one billion, nine hundred one million, two hundred forty-two thousand, five hundred thirty-one".