2869640190 has 128 divisors (see below), whose sum is σ = 7945344000. Its totient is φ = 736138368.

The previous prime is 2869640177. The next prime is 2869640197. The reversal of 2869640190 is 910469682.

It is a happy number.

It is a super-2 number, since 2×2869640190² = 16469669640126472200, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2869640197) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2967087 + ... + 2968053.

It is an arithmetic number, because the mean of its divisors is an integer number (62073000).

Almost surely, 2^2869640190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2869640190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3972672000).

2869640190 is an abundant number, since it is smaller than the sum of its proper divisors (5075703810).

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

2869640190 is a wasteful number, since it uses less digits than its factorization.

2869640190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 2869640190 is about 53569.0226716897. The cubic root of 2869640190 is about 1421.0493120325.

It can be divided in two parts, 28696 and 40190, that added together give a palindrome (68886).

The spelling of 2869640190 in words is "two billion, eight hundred sixty-nine million, six hundred forty thousand, one hundred ninety".