1402191491 has 2 divisors, whose sum is σ = 1402191492. Its totient is φ = 1402191490.

The previous prime is 1402191457. The next prime is 1402191517. The reversal of 1402191491 is 1941912041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402191491 - 2¹⁰ = 1402190467 is a prime.

It is a super-2 number, since 2×1402191491² = 3932281954865606162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1402191421) 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, 701095745 + 701095746.

It is an arithmetic number, because the mean of its divisors is an integer number (701095746).

Almost surely, 2^1402191491 is an apocalyptic number.

1402191491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402191491 is an equidigital number, since it uses as much as digits as its factorization.

1402191491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1402191491 is about 37445.8474466796. The cubic root of 1402191491 is about 1119.2723512854.

The spelling of 1402191491 in words is "one billion, four hundred two million, one hundred ninety-one thousand, four hundred ninety-one".