190702654421 has 2 divisors, whose sum is σ = 190702654422. Its totient is φ = 190702654420.

The previous prime is 190702654367. The next prime is 190702654427. The reversal of 190702654421 is 124456207091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190130009521 + 572644900 = 436039^2 + 23930^2 .

It is a cyclic number.

It is not a de Polignac number, because 190702654421 - 2⁶ = 190702654357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190702654427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95351327210 + 95351327211.

It is an arithmetic number, because the mean of its divisors is an integer number (95351327211).

Almost surely, 2^190702654421 is an apocalyptic number.

It is an amenable number.

190702654421 is a deficient number, since it is larger than the sum of its proper divisors (1).

190702654421 is an equidigital number, since it uses as much as digits as its factorization.

190702654421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 190702654421 in words is "one hundred ninety billion, seven hundred two million, six hundred fifty-four thousand, four hundred twenty-one".