190020377 has 2 divisors, whose sum is σ = 190020378. Its totient is φ = 190020376.

The previous prime is 190020343. The next prime is 190020401. The reversal of 190020377 is 773020091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 158030041 + 31990336 = 12571^2 + 5656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190020377 is a prime.

It is a super-2 number, since 2×190020377² = 72215487350444258, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190020277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95010188 + 95010189.

It is an arithmetic number, because the mean of its divisors is an integer number (95010189).

Almost surely, 2^190020377 is an apocalyptic number.

It is an amenable number.

190020377 is a deficient number, since it is larger than the sum of its proper divisors (1).

190020377 is an equidigital number, since it uses as much as digits as its factorization.

190020377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 190020377 is about 13784.7878837507. The cubic root of 190020377 is about 574.9102589626.

The spelling of 190020377 in words is "one hundred ninety million, twenty thousand, three hundred seventy-seven".