1872920161503 has 64 divisors (see below), whose sum is σ = 2831045145600. Its totient is φ = 1223404300800.

The previous prime is 1872920161499. The next prime is 1872920161507. The reversal of 1872920161503 is 3051610292781.

1872920161503 is a `hidden beast` number, since 1 + 8 + 7 + 2 + 9 + 20 + 1 + 615 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (1872920161499) and next prime (1872920161507).

It is not a de Polignac number, because 1872920161503 - 2² = 1872920161499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872920161507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 787933251 + ... + 787935627.

It is an arithmetic number, because the mean of its divisors is an integer number (44235080400).

Almost surely, 2^{1872920161503} is an apocalyptic number.

1872920161503 is a deficient number, since it is larger than the sum of its proper divisors (958124984097).

1872920161503 is a wasteful number, since it uses less digits than its factorization.

1872920161503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3869 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 1872920161503 in words is "one trillion, eight hundred seventy-two billion, nine hundred twenty million, one hundred sixty-one thousand, five hundred three".