3519975981 has 16 divisors (see below), whose sum is σ = 4712616000. Its totient is φ = 2337011328.

The previous prime is 3519975917. The next prime is 3519975983. The reversal of 3519975981 is 1895799153.

3519975981 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3519975981 - 2⁶ = 3519975917 is a prime.

It is a super-2 number, since 2×3519975981² = 24780461813633824722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3519975983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152945 + ... + 1155993.

It is an arithmetic number, because the mean of its divisors is an integer number (294538500).

Almost surely, 2^3519975981 is an apocalyptic number.

It is an amenable number.

3519975981 is a deficient number, since it is larger than the sum of its proper divisors (1192640019).

3519975981 is a wasteful number, since it uses less digits than its factorization.

3519975981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508.

The product of its digits is 3061800, while the sum is 57.

The square root of 3519975981 is about 59329.3854763388. The cubic root of 3519975981 is about 1521.1775243302.

The spelling of 3519975981 in words is "three billion, five hundred nineteen million, nine hundred seventy-five thousand, nine hundred eighty-one".