4870156981 has 2 divisors, whose sum is σ = 4870156982. Its totient is φ = 4870156980.

The previous prime is 4870156961. The next prime is 4870157063. The reversal of 4870156981 is 1896510784.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4087556356 + 782600625 = 63934^2 + 27975^2 .

It is a cyclic number.

It is not a de Polignac number, because 4870156981 - 2⁷ = 4870156853 is a prime.

It is a super-2 number, since 2×4870156981² = 47436858039166068722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4870156901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2435078490 + 2435078491.

It is an arithmetic number, because the mean of its divisors is an integer number (2435078491).

Almost surely, 2^4870156981 is an apocalyptic number.

It is an amenable number.

4870156981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4870156981 is an equidigital number, since it uses as much as digits as its factorization.

4870156981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 4870156981 is about 69786.5100216367. The cubic root of 4870156981 is about 1695.0440414008.

The spelling of 4870156981 in words is "four billion, eight hundred seventy million, one hundred fifty-six thousand, nine hundred eighty-one".