1878632131 has 2 divisors, whose sum is σ = 1878632132. Its totient is φ = 1878632130.

The previous prime is 1878632083. The next prime is 1878632149. The reversal of 1878632131 is 1312368781.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1878632131 - 2¹³ = 1878623939 is a prime.

It is a super-2 number, since 2×1878632131² = 7058517367251202322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1878636131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 939316065 + 939316066.

It is an arithmetic number, because the mean of its divisors is an integer number (939316066).

Almost surely, 2^1878632131 is an apocalyptic number.

1878632131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1878632131 is an equidigital number, since it uses as much as digits as its factorization.

1878632131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 1878632131 is about 43343.1901340914. The cubic root of 1878632131 is about 1233.9017551661.

The spelling of 1878632131 in words is "one billion, eight hundred seventy-eight million, six hundred thirty-two thousand, one hundred thirty-one".