2690153638 has 4 divisors (see below), whose sum is σ = 4035230460. Its totient is φ = 1345076818.

The previous prime is 2690153591. The next prime is 2690153639. The reversal of 2690153638 is 8363510962.

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

It is a super-3 number, since 3×2690153638³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2690153594 and 2690153603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2690153639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672538408 + ... + 672538411.

It is an arithmetic number, because the mean of its divisors is an integer number (1008807615).

Almost surely, 2^2690153638 is an apocalyptic number.

2690153638 is a deficient number, since it is larger than the sum of its proper divisors (1345076822).

2690153638 is a wasteful number, since it uses less digits than its factorization.

2690153638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345076821.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 2690153638 is about 51866.6910261297. The cubic root of 2690153638 is about 1390.7818933048.

The spelling of 2690153638 in words is "two billion, six hundred ninety million, one hundred fifty-three thousand, six hundred thirty-eight".