749561490 has 48 divisors (see below), whose sum is σ = 2033598528. Its totient is φ = 191191968.

The previous prime is 749561453. The next prime is 749561507. The reversal of 749561490 is 94165947.

749561490 is a `hidden beast` number, since 7 + 49 + 561 + 49 + 0 = 666.

749561490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178984 + ... + 183123.

It is an arithmetic number, because the mean of its divisors is an integer number (42366636).

Almost surely, 2^749561490 is an apocalyptic number.

749561490 is an abundant number, since it is smaller than the sum of its proper divisors (1284037038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749561490 is a wasteful number, since it uses less digits than its factorization.

749561490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362143 (or 362140 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 749561490 is about 27378.1206440471. The cubic root of 749561490 is about 908.3831895499.

The spelling of 749561490 in words is "seven hundred forty-nine million, five hundred sixty-one thousand, four hundred ninety".