2690505138 has 16 divisors (see below), whose sum is σ = 5472214560. Its totient is φ = 881634336.

The previous prime is 2690505137. The next prime is 2690505143. The reversal of 2690505138 is 8315050962.

2690505138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2690505096 and 2690505105.

It is not an unprimeable number, because it can be changed into a prime (2690505137) 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, 3799795 + ... + 3800502.

It is an arithmetic number, because the mean of its divisors is an integer number (342013410).

Almost surely, 2^2690505138 is an apocalyptic number.

2690505138 is an abundant number, since it is smaller than the sum of its proper divisors (2781709422).

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

2690505138 is a wasteful number, since it uses less digits than its factorization.

2690505138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600361.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 2690505138 is about 51870.0794100028. The cubic root of 2690505138 is about 1390.8424646341.

The spelling of 2690505138 in words is "two billion, six hundred ninety million, five hundred five thousand, one hundred thirty-eight".