1974831855 has 8 divisors (see below), whose sum is σ = 3159730992. Its totient is φ = 1053243648.

The previous prime is 1974831841. The next prime is 1974831857. The reversal of 1974831855 is 5581384791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1974831855 - 2⁶ = 1974831791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1974831798 and 1974831807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974831857) 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, 65827714 + ... + 65827743.

It is an arithmetic number, because the mean of its divisors is an integer number (394966374).

Almost surely, 2^1974831855 is an apocalyptic number.

1974831855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1974831855 is a deficient number, since it is larger than the sum of its proper divisors (1184899137).

1974831855 is a wasteful number, since it uses less digits than its factorization.

1974831855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131655465.

The product of its digits is 1209600, while the sum is 51.

The square root of 1974831855 is about 44439.0802672603. The cubic root of 1974831855 is about 1254.6137454639.

The spelling of 1974831855 in words is "one billion, nine hundred seventy-four million, eight hundred thirty-one thousand, eight hundred fifty-five".