1532291861 has 2 divisors, whose sum is σ = 1532291862. Its totient is φ = 1532291860.

The previous prime is 1532291843. The next prime is 1532291863. The reversal of 1532291861 is 1681922351.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1398311236 + 133980625 = 37394^2 + 11575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1532291861 - 2⁶ = 1532291797 is a prime.

Together with 1532291863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1532291863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 766145930 + 766145931.

It is an arithmetic number, because the mean of its divisors is an integer number (766145931).

Almost surely, 2^1532291861 is an apocalyptic number.

It is an amenable number.

1532291861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1532291861 is an equidigital number, since it uses as much as digits as its factorization.

1532291861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 1532291861 is about 39144.4997541162. The cubic root of 1532291861 is about 1152.8704251104.

The spelling of 1532291861 in words is "one billion, five hundred thirty-two million, two hundred ninety-one thousand, eight hundred sixty-one".