745140187 has 4 divisors (see below), whose sum is σ = 812880216. Its totient is φ = 677400160.

The previous prime is 745140173. The next prime is 745140199. The reversal of 745140187 is 781041547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 745140187 - 2⁷ = 745140059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745140167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33869998 + ... + 33870019.

It is an arithmetic number, because the mean of its divisors is an integer number (203220054).

Almost surely, 2^745140187 is an apocalyptic number.

745140187 is a deficient number, since it is larger than the sum of its proper divisors (67740029).

745140187 is a wasteful number, since it uses less digits than its factorization.

745140187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67740028.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 745140187 is about 27297.2560342610. The cubic root of 745140187 is about 906.5936277098.

Adding to 745140187 its product of nonzero digits (31360), we get a palindrome (745171547).

The spelling of 745140187 in words is "seven hundred forty-five million, one hundred forty thousand, one hundred eighty-seven".