1640970792903 has 32 divisors (see below), whose sum is σ = 2481439528960. Its totient is φ = 956231982720.

The previous prime is 1640970792887. The next prime is 1640970792907. The reversal of 1640970792903 is 3092970790461.

It is not a de Polignac number, because 1640970792903 - 2⁴ = 1640970792887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640970792907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071273 + ... + 2104653.

It is an arithmetic number, because the mean of its divisors is an integer number (77544985280).

Almost surely, 2^{1640970792903} is an apocalyptic number.

1640970792903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1640970792903 is a deficient number, since it is larger than the sum of its proper divisors (840468736057).

1640970792903 is a wasteful number, since it uses less digits than its factorization.

1640970792903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035559.

The product of its (nonzero) digits is 5143824, while the sum is 57.

The spelling of 1640970792903 in words is "one trillion, six hundred forty billion, nine hundred seventy million, seven hundred ninety-two thousand, nine hundred three".