1672788923 has 16 divisors (see below), whose sum is σ = 1862090496. Its totient is φ = 1492283520.

The previous prime is 1672788917. The next prime is 1672788947. The reversal of 1672788923 is 3298872761.

It is not a de Polignac number, because 1672788923 - 2¹⁰ = 1672787899 is a prime.

It is a super-2 number, since 2×1672788923² = 5596445561822999858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1672788913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351065 + ... + 355797.

It is an arithmetic number, because the mean of its divisors is an integer number (116380656).

Almost surely, 2^1672788923 is an apocalyptic number.

1672788923 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1672788923 is a deficient number, since it is larger than the sum of its proper divisors (189301573).

1672788923 is a wasteful number, since it uses less digits than its factorization.

1672788923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5654.

The product of its digits is 2032128, while the sum is 53.

The square root of 1672788923 is about 40899.7423341517. The cubic root of 1672788923 is about 1187.0810750254.

The spelling of 1672788923 in words is "one billion, six hundred seventy-two million, seven hundred eighty-eight thousand, nine hundred twenty-three".