20131493741 has 2 divisors, whose sum is σ = 20131493742. Its totient is φ = 20131493740.

The previous prime is 20131493717. The next prime is 20131493777. The reversal of 20131493741 is 14739413102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10692594025 + 9438899716 = 103405^2 + 97154^2 .

It is a cyclic number.

It is not a de Polignac number, because 20131493741 - 2⁶ = 20131493677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131493141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065746870 + 10065746871.

It is an arithmetic number, because the mean of its divisors is an integer number (10065746871).

Almost surely, 2^20131493741 is an apocalyptic number.

It is an amenable number.

20131493741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131493741 is an equidigital number, since it uses as much as digits as its factorization.

20131493741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 20131493741 in words is "twenty billion, one hundred thirty-one million, four hundred ninety-three thousand, seven hundred forty-one".