1868431377 has 16 divisors (see below), whose sum is σ = 2561977152. Its totient is φ = 1210490880.

The previous prime is 1868431361. The next prime is 1868431429. The reversal of 1868431377 is 7731348681.

It is not a de Polignac number, because 1868431377 - 2⁴ = 1868431361 is a prime.

It is a super-2 number, since 2×1868431377² = 6982071621116232258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1868431337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2058 + ... + 61164.

It is an arithmetic number, because the mean of its divisors is an integer number (160123572).

Almost surely, 2^1868431377 is an apocalyptic number.

It is an amenable number.

1868431377 is a deficient number, since it is larger than the sum of its proper divisors (693545775).

1868431377 is a wasteful number, since it uses less digits than its factorization.

1868431377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59408.

The product of its digits is 677376, while the sum is 48.

The square root of 1868431377 is about 43225.3557186057. The cubic root of 1868431377 is about 1231.6643863701.

The spelling of 1868431377 in words is "one billion, eight hundred sixty-eight million, four hundred thirty-one thousand, three hundred seventy-seven".