744741891 has 16 divisors (see below), whose sum is σ = 1104455200. Its totient is φ = 495984384.

The previous prime is 744741869. The next prime is 744741901. The reversal of 744741891 is 198147447.

It is a happy number.

It is not a de Polignac number, because 744741891 - 2⁵ = 744741859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744741821) 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, 13575 + ... + 40911.

It is an arithmetic number, because the mean of its divisors is an integer number (69028450).

Almost surely, 2^744741891 is an apocalyptic number.

744741891 is a deficient number, since it is larger than the sum of its proper divisors (359713309).

744741891 is a wasteful number, since it uses less digits than its factorization.

744741891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28355 (or 28349 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 744741891 is about 27289.9595272694. The cubic root of 744741891 is about 906.4320666243.

The spelling of 744741891 in words is "seven hundred forty-four million, seven hundred forty-one thousand, eight hundred ninety-one".