6157722981 has 8 divisors (see below), whose sum is σ = 8215839520. Its totient is φ = 4102377552.

The previous prime is 6157722959. The next prime is 6157723021. The reversal of 6157722981 is 1892277516.

6157722981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6157722981 - 2¹⁵ = 6157690213 is a prime.

It is a super-2 number, since 2×6157722981² = 75835104621471052722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6157722981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6157722941) 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, 687586 + ... + 696483.

It is an arithmetic number, because the mean of its divisors is an integer number (1026979940).

Almost surely, 2^6157722981 is an apocalyptic number.

It is an amenable number.

6157722981 is a deficient number, since it is larger than the sum of its proper divisors (2058116539).

6157722981 is a wasteful number, since it uses less digits than its factorization.

6157722981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385555.

The product of its digits is 423360, while the sum is 48.

The square root of 6157722981 is about 78471.1601864022. The cubic root of 6157722981 is about 1832.9053931824.

The spelling of 6157722981 in words is "six billion, one hundred fifty-seven million, seven hundred twenty-two thousand, nine hundred eighty-one".