745628949 has 16 divisors (see below), whose sum is σ = 1189608000. Its totient is φ = 458848368.

The previous prime is 745628941. The next prime is 745628969. The reversal of 745628949 is 949826547.

745628949 is a `hidden beast` number, since 7 + 4 + 5 + 628 + 9 + 4 + 9 = 666.

It is not a de Polignac number, because 745628949 - 2³ = 745628941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 745628895 and 745628904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745628941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1061799 + ... + 1062500.

It is an arithmetic number, because the mean of its divisors is an integer number (74350500).

Almost surely, 2^745628949 is an apocalyptic number.

It is an amenable number.

745628949 is a deficient number, since it is larger than the sum of its proper divisors (443979051).

745628949 is a wasteful number, since it uses less digits than its factorization.

745628949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124321 (or 2124315 counting only the distinct ones).

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

The square root of 745628949 is about 27306.2071514885. The cubic root of 745628949 is about 906.7918059293.

The spelling of 745628949 in words is "seven hundred forty-five million, six hundred twenty-eight thousand, nine hundred forty-nine".