7435138986 has 64 divisors (see below), whose sum is σ = 18129018240. Its totient is φ = 2240017920.

The previous prime is 7435138967. The next prime is 7435139003. The reversal of 7435138986 is 6898315347.

7435138986 is a `hidden beast` number, since 7 + 43 + 513 + 8 + 9 + 86 = 666.

It is a super-2 number, since 2×7435138986² (a number of 21 digits) contains 22 as substring.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66586 + ... + 138938.

It is an arithmetic number, because the mean of its divisors is an integer number (283265910).

Almost surely, 2^7435138986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7435138986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9064509120).

7435138986 is an abundant number, since it is smaller than the sum of its proper divisors (10693879254).

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

7435138986 is a wasteful number, since it uses less digits than its factorization.

7435138986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72548 (or 72542 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 7435138986 is about 86227.2519914673. The cubic root of 7435138986 is about 1951.7747582095.

The spelling of 7435138986 in words is "seven billion, four hundred thirty-five million, one hundred thirty-eight thousand, nine hundred eighty-six".