3749280731 has 16 divisors (see below), whose sum is σ = 4341410304. Its totient is φ = 3171369024.

The previous prime is 3749280727. The next prime is 3749280877. The reversal of 3749280731 is 1370829473.

It is a cyclic number.

It is not a de Polignac number, because 3749280731 - 2² = 3749280727 is a prime.

It is a super-2 number, since 2×3749280731² = 28114211999695788722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3749280721) 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, 597050 + ... + 603296.

It is an arithmetic number, because the mean of its divisors is an integer number (271338144).

Almost surely, 2^3749280731 is an apocalyptic number.

3749280731 is a deficient number, since it is larger than the sum of its proper divisors (592129573).

3749280731 is a wasteful number, since it uses less digits than its factorization.

3749280731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7370.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 3749280731 is about 61231.3704811512. The cubic root of 3749280731 is about 1553.5169161359.

The spelling of 3749280731 in words is "three billion, seven hundred forty-nine million, two hundred eighty thousand, seven hundred thirty-one".