2031749136 has 40 divisors (see below), whose sum is σ = 5831873760. Its totient is φ = 677249568.

The previous prime is 2031749131. The next prime is 2031749147. The reversal of 2031749136 is 6319471302.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2031749136.

It is not an unprimeable number, because it can be changed into a prime (2031749131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2351130 + ... + 2351993.

It is an arithmetic number, because the mean of its divisors is an integer number (145796844).

Almost surely, 2^2031749136 is an apocalyptic number.

It is an amenable number.

2031749136 is an abundant number, since it is smaller than the sum of its proper divisors (3800124624).

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

2031749136 is a wasteful number, since it uses less digits than its factorization.

2031749136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703140 (or 4703128 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 2031749136 is about 45074.9280199092. The cubic root of 2031749136 is about 1266.5529805016.

The spelling of 2031749136 in words is "two billion, thirty-one million, seven hundred forty-nine thousand, one hundred thirty-six".