4157121982 has 32 divisors (see below), whose sum is σ = 7049452032. Its totient is φ = 1824217824.

The previous prime is 4157121977. The next prime is 4157122007. The reversal of 4157121982 is 2891217514.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79053 + ... + 120679.

It is an arithmetic number, because the mean of its divisors is an integer number (220295376).

Almost surely, 2^4157121982 is an apocalyptic number.

4157121982 is a deficient number, since it is larger than the sum of its proper divisors (2892330050).

4157121982 is a wasteful number, since it uses less digits than its factorization.

4157121982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41832.

The product of its digits is 40320, while the sum is 40.

The square root of 4157121982 is about 64475.7472387874. The cubic root of 4157121982 is about 1607.9193293750.

The spelling of 4157121982 in words is "four billion, one hundred fifty-seven million, one hundred twenty-one thousand, nine hundred eighty-two".