1208920923 has 32 divisors (see below), whose sum is σ = 2154585600. Its totient is φ = 654451488.

The previous prime is 1208920907. The next prime is 1208920969. The reversal of 1208920923 is 3290298021.

It is not a de Polignac number, because 1208920923 - 2⁴ = 1208920907 is a prime.

It is a super-2 number, since 2×1208920923² = 2922979596134343858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1208920903) 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, 164736 + ... + 171917.

It is an arithmetic number, because the mean of its divisors is an integer number (67330800).

Almost surely, 2^1208920923 is an apocalyptic number.

1208920923 is a deficient number, since it is larger than the sum of its proper divisors (945664677).

1208920923 is a wasteful number, since it uses less digits than its factorization.

1208920923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336688 (or 336682 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1208920923 is about 34769.5401608937. The cubic root of 1208920923 is about 1065.2853748242.

The spelling of 1208920923 in words is "one billion, two hundred eight million, nine hundred twenty thousand, nine hundred twenty-three".