1890726133739 has 2 divisors, whose sum is σ = 1890726133740. Its totient is φ = 1890726133738.

The previous prime is 1890726133733. The next prime is 1890726133741. The reversal of 1890726133739 is 9373316270981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1890726133739 is a prime.

Together with 1890726133741, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1890726133733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 945363066869 + 945363066870.

It is an arithmetic number, because the mean of its divisors is an integer number (945363066870).

Almost surely, 2^{1890726133739} is an apocalyptic number.

1890726133739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1890726133739 is an equidigital number, since it uses as much as digits as its factorization.

1890726133739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 59.

The spelling of 1890726133739 in words is "one trillion, eight hundred ninety billion, seven hundred twenty-six million, one hundred thirty-three thousand, seven hundred thirty-nine".