7190235981 has 12 divisors (see below), whose sum is σ = 10556157820. Its totient is φ = 4714908480.

The previous prime is 7190235977. The next prime is 7190236033. The reversal of 7190235981 is 1895320917.

It can be written as a sum of positive squares in 2 ways, for example, as 3290857956 + 3899378025 = 57366^2 + 62445^2 .

It is not a de Polignac number, because 7190235981 - 2² = 7190235977 is a prime.

It is a super-2 number, since 2×7190235981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7190235971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6547936 + ... + 6549033.

Almost surely, 2^7190235981 is an apocalyptic number.

It is an amenable number.

7190235981 is a deficient number, since it is larger than the sum of its proper divisors (3365921839).

7190235981 is a wasteful number, since it uses less digits than its factorization.

7190235981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13097036 (or 13097033 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 7190235981 is about 84795.2591894146. The cubic root of 7190235981 is about 1930.1054987209.

The spelling of 7190235981 in words is "seven billion, one hundred ninety million, two hundred thirty-five thousand, nine hundred eighty-one".