1826990137 has 6 divisors (see below), whose sum is σ = 2125274298. Its totient is φ = 1565991504.

The previous prime is 1826990089. The next prime is 1826990141. The reversal of 1826990137 is 7310996281.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1588102201 + 238887936 = 39851^2 + 15456^2 .

It is not a de Polignac number, because 1826990137 - 2²⁷ = 1692772409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1826990437) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18642708 + ... + 18642805.

It is an arithmetic number, because the mean of its divisors is an integer number (354212383).

Almost surely, 2^1826990137 is an apocalyptic number.

It is an amenable number.

1826990137 is a deficient number, since it is larger than the sum of its proper divisors (298284161).

1826990137 is an equidigital number, since it uses as much as digits as its factorization.

1826990137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37285527 (or 37285520 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1826990137 is about 42743.3051716874. The cubic root of 1826990137 is about 1222.4902411528.

The spelling of 1826990137 in words is "one billion, eight hundred twenty-six million, nine hundred ninety thousand, one hundred thirty-seven".