749136863 has 4 divisors (see below), whose sum is σ = 750151320. Its totient is φ = 748122408.

The previous prime is 749136851. The next prime is 749136889. The reversal of 749136863 is 368631947.

It is a happy number.

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 749136863 - 2⁴ = 749136847 is a prime.

It is a super-2 number, since 2×749136863² = 1122412079010961538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749136803) 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, 506120 + ... + 507597.

It is an arithmetic number, because the mean of its divisors is an integer number (187537830).

Almost surely, 2^749136863 is an apocalyptic number.

749136863 is a deficient number, since it is larger than the sum of its proper divisors (1014457).

749136863 is a wasteful number, since it uses less digits than its factorization.

749136863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014456.

The product of its digits is 653184, while the sum is 47.

The square root of 749136863 is about 27370.3646851846. The cubic root of 749136863 is about 908.2116239549.

The spelling of 749136863 in words is "seven hundred forty-nine million, one hundred thirty-six thousand, eight hundred sixty-three".