1897623942 has 16 divisors (see below), whose sum is σ = 3796919280. Its totient is φ = 632262752.

The previous prime is 1897623941. The next prime is 1897623943. The reversal of 1897623942 is 2493267981.

It is an interprime number because it is at equal distance from previous prime (1897623941) and next prime (1897623943).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897623941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54633 + ... + 82340.

It is an arithmetic number, because the mean of its divisors is an integer number (237307455).

Almost surely, 2^1897623942 is an apocalyptic number.

1897623942 is an abundant number, since it is smaller than the sum of its proper divisors (1899295338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1897623942 is a wasteful number, since it uses less digits than its factorization.

1897623942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139287.

The product of its digits is 1306368, while the sum is 51.

The square root of 1897623942 is about 43561.7256545238. The cubic root of 1897623942 is about 1238.0458167288.

The spelling of 1897623942 in words is "one billion, eight hundred ninety-seven million, six hundred twenty-three thousand, nine hundred forty-two".