102690919 has 2 divisors, whose sum is σ = 102690920. Its totient is φ = 102690918.

The previous prime is 102690899. The next prime is 102690961. The reversal of 102690919 is 919096201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102690919 - 2¹¹ = 102688871 is a prime.

It is a super-2 number, since 2×102690919² = 21090849690129122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102690979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51345459 + 51345460.

It is an arithmetic number, because the mean of its divisors is an integer number (51345460).

Almost surely, 2^102690919 is an apocalyptic number.

102690919 is a deficient number, since it is larger than the sum of its proper divisors (1).

102690919 is an equidigital number, since it uses as much as digits as its factorization.

102690919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 102690919 is about 10133.6527964994. The cubic root of 102690919 is about 468.2854672891.

The spelling of 102690919 in words is "one hundred two million, six hundred ninety thousand, nine hundred nineteen".