1402310891 has 2 divisors, whose sum is σ = 1402310892. Its totient is φ = 1402310890.

The previous prime is 1402310849. The next prime is 1402310893. The reversal of 1402310891 is 1980132041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402310891 - 2²⁶ = 1335202027 is a prime.

It is a Sophie Germain prime.

Together with 1402310893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1402310893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701155445 + 701155446.

It is an arithmetic number, because the mean of its divisors is an integer number (701155446).

Almost surely, 2^1402310891 is an apocalyptic number.

1402310891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402310891 is an equidigital number, since it uses as much as digits as its factorization.

1402310891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1402310891 is about 37447.4417150224. The cubic root of 1402310891 is about 1119.3041199671.

The spelling of 1402310891 in words is "one billion, four hundred two million, three hundred ten thousand, eight hundred ninety-one".