745122538 has 8 divisors (see below), whose sum is σ = 1119589632. Its totient is φ = 371925996.

The previous prime is 745122431. The next prime is 745122557. The reversal of 745122538 is 835221547.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×745122538² = 1110415193271122888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 745122497 and 745122506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316170 + ... + 318517.

It is an arithmetic number, because the mean of its divisors is an integer number (139948704).

Almost surely, 2^745122538 is an apocalyptic number.

745122538 is a deficient number, since it is larger than the sum of its proper divisors (374467094).

745122538 is a wasteful number, since it uses less digits than its factorization.

745122538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635276.

The product of its digits is 67200, while the sum is 37.

The square root of 745122538 is about 27296.9327580957. The cubic root of 745122538 is about 906.5864699527.

Subtracting 745122538 from its reverse (835221547), we obtain a palindrome (90099009).

The spelling of 745122538 in words is "seven hundred forty-five million, one hundred twenty-two thousand, five hundred thirty-eight".