1649377873913 has 48 divisors (see below), whose sum is σ = 2102969677248. Its totient is φ = 1279168128000.

The previous prime is 1649377873907. The next prime is 1649377873919. The reversal of 1649377873913 is 3193787739461.

It is an interprime number because it is at equal distance from previous prime (1649377873907) and next prime (1649377873919).

It is not a de Polignac number, because 1649377873913 - 2¹⁴ = 1649377857529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1649377873919) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 391123781 + ... + 391127997.

It is an arithmetic number, because the mean of its divisors is an integer number (43811868276).

Almost surely, 2^{1649377873913} is an apocalyptic number.

It is an amenable number.

1649377873913 is a deficient number, since it is larger than the sum of its proper divisors (453591803335).

1649377873913 is a wasteful number, since it uses less digits than its factorization.

1649377873913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7494 (or 7487 counting only the distinct ones).

The product of its digits is 144027072, while the sum is 68.

The spelling of 1649377873913 in words is "one trillion, six hundred forty-nine billion, three hundred seventy-seven million, eight hundred seventy-three thousand, nine hundred thirteen".