3513757981 has 2 divisors, whose sum is σ = 3513757982. Its totient is φ = 3513757980.

The previous prime is 3513757963. The next prime is 3513757991. The reversal of 3513757981 is 1897573153.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2830772025 + 682985956 = 53205^2 + 26134^2 .

It is a cyclic number.

It is not a de Polignac number, because 3513757981 - 2²¹ = 3511660829 is a prime.

It is a super-2 number, since 2×3513757981² = 24692990298082392722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3513757991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1756878990 + 1756878991.

It is an arithmetic number, because the mean of its divisors is an integer number (1756878991).

Almost surely, 2^3513757981 is an apocalyptic number.

It is an amenable number.

3513757981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3513757981 is an equidigital number, since it uses as much as digits as its factorization.

3513757981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 49.

The square root of 3513757981 is about 59276.9599507262. The cubic root of 3513757981 is about 1520.2812817684.

The spelling of 3513757981 in words is "three billion, five hundred thirteen million, seven hundred fifty-seven thousand, nine hundred eighty-one".