2516391403 has 2 divisors, whose sum is σ = 2516391404. Its totient is φ = 2516391402.

The previous prime is 2516391401. The next prime is 2516391499. The reversal of 2516391403 is 3041936152.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2516391403 - 2¹ = 2516391401 is a prime.

Together with 2516391401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2516391401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1258195701 + 1258195702.

It is an arithmetic number, because the mean of its divisors is an integer number (1258195702).

Almost surely, 2^2516391403 is an apocalyptic number.

2516391403 is a deficient number, since it is larger than the sum of its proper divisors (1).

2516391403 is an equidigital number, since it uses as much as digits as its factorization.

2516391403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 2516391403 is about 50163.6462291170. The cubic root of 2516391403 is about 1360.1685566387.

The spelling of 2516391403 in words is "two billion, five hundred sixteen million, three hundred ninety-one thousand, four hundred three".