7438621975 has 6 divisors (see below), whose sum is σ = 9223891280. Its totient is φ = 5950897560.

The previous prime is 7438621943. The next prime is 7438622011. The reversal of 7438621975 is 5791268347.

It is not a de Polignac number, because 7438621975 - 2⁵ = 7438621943 is a prime.

It is a super-4 number, since 4×7438621975⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148772415 + ... + 148772464.

Almost surely, 2^7438621975 is an apocalyptic number.

7438621975 is a deficient number, since it is larger than the sum of its proper divisors (1785269305).

7438621975 is a wasteful number, since it uses less digits than its factorization.

7438621975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297544889 (or 297544884 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 52.

The square root of 7438621975 is about 86247.4461940758. The cubic root of 7438621975 is about 1952.0794800981.

The spelling of 7438621975 in words is "seven billion, four hundred thirty-eight million, six hundred twenty-one thousand, nine hundred seventy-five".