2690382638 has 4 divisors (see below), whose sum is σ = 4035573960. Its totient is φ = 1345191318.

The previous prime is 2690382637. The next prime is 2690382679. The reversal of 2690382638 is 8362830962.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2690382592 and 2690382601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690382637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672595658 + ... + 672595661.

It is an arithmetic number, because the mean of its divisors is an integer number (1008893490).

Almost surely, 2^2690382638 is an apocalyptic number.

2690382638 is a deficient number, since it is larger than the sum of its proper divisors (1345191322).

2690382638 is a wasteful number, since it uses less digits than its factorization.

2690382638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345191321.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 2690382638 is about 51868.8985616622. The cubic root of 2690382638 is about 1390.8213557370.

The spelling of 2690382638 in words is "two billion, six hundred ninety million, three hundred eighty-two thousand, six hundred thirty-eight".