7162981840 has 40 divisors (see below), whose sum is σ = 19033067520. Its totient is φ = 2455879296.

The previous prime is 7162981831. The next prime is 7162981849. The reversal of 7162981840 is 481892617.

It is an interprime number because it is at equal distance from previous prime (7162981831) and next prime (7162981849).

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7162981849) 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, 6394960 + ... + 6396079.

It is an arithmetic number, because the mean of its divisors is an integer number (475826688).

Almost surely, 2^7162981840 is an apocalyptic number.

7162981840 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7162981840 is an abundant number, since it is smaller than the sum of its proper divisors (11870085680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7162981840 is a wasteful number, since it uses less digits than its factorization.

7162981840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12791059 (or 12791053 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 7162981840 is about 84634.4010435473. The cubic root of 7162981840 is about 1927.6637628669.

The spelling of 7162981840 in words is "seven billion, one hundred sixty-two million, nine hundred eighty-one thousand, eight hundred forty".