745511949 has 96 divisors (see below), whose sum is σ = 1456465920. Its totient is φ = 356171904.

The previous prime is 745511947. The next prime is 745511953. The reversal of 745511949 is 949115547.

745511949 is a `hidden beast` number, since 7 + 4 + 551 + 1 + 94 + 9 = 666.

It is not a de Polignac number, because 745511949 - 2¹ = 745511947 is a prime.

It is a super-3 number, since 3×745511949³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745511947) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 356862 + ... + 358944.

It is an arithmetic number, because the mean of its divisors is an integer number (15171520).

Almost surely, 2^745511949 is an apocalyptic number.

It is an amenable number.

745511949 is a deficient number, since it is larger than the sum of its proper divisors (710953971).

745511949 is a wasteful number, since it uses less digits than its factorization.

745511949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2148 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 745511949 is about 27304.0646974036. The cubic root of 745511949 is about 906.7443738515.

The spelling of 745511949 in words is "seven hundred forty-five million, five hundred eleven thousand, nine hundred forty-nine".