7953990534 has 80 divisors (see below), whose sum is σ = 20504284416. Its totient is φ = 2257470000.

The previous prime is 7953990533. The next prime is 7953990547. The reversal of 7953990534 is 4350993597.

It is a happy number.

7953990534 is a `hidden beast` number, since 79 + 5 + 39 + 9 + 0 + 534 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7953990533) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 148009 + ... + 194459.

Almost surely, 2^7953990534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7953990534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10252142208).

7953990534 is an abundant number, since it is smaller than the sum of its proper divisors (12550293882).

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

7953990534 is a wasteful number, since it uses less digits than its factorization.

7953990534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46623 (or 46614 counting only the distinct ones).

The product of its (nonzero) digits is 4592700, while the sum is 54.

The square root of 7953990534 is about 89185.1474966544. The cubic root of 7953990534 is about 1996.1585040117.

The spelling of 7953990534 in words is "seven billion, nine hundred fifty-three million, nine hundred ninety thousand, five hundred thirty-four".