138773000290 has 16 divisors (see below), whose sum is σ = 249823030968. Its totient is φ = 55502171136.

The previous prime is 138773000287. The next prime is 138773000321. The reversal of 138773000290 is 92000377831.

It can be written as a sum of positive squares in 4 ways, for example, as 81986586889 + 56786413401 = 286333^2 + 238299^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795327 + ... + 953986.

Almost surely, 2^138773000290 is an apocalyptic number.

138773000290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138773000290 is a deficient number, since it is larger than the sum of its proper divisors (111050030678).

138773000290 is a wasteful number, since it uses less digits than its factorization.

138773000290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757253.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 138773000290 in words is "one hundred thirty-eight billion, seven hundred seventy-three million, two hundred ninety", and thus it is an aban number.