102381619 has 2 divisors, whose sum is σ = 102381620. Its totient is φ = 102381618.

The previous prime is 102381547. The next prime is 102381641. The reversal of 102381619 is 916183201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102381619 - 2¹⁹ = 101857331 is a prime.

It is a super-2 number, since 2×102381619² = 20963991818122322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102381659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51190809 + 51190810.

It is an arithmetic number, because the mean of its divisors is an integer number (51190810).

Almost surely, 2^102381619 is an apocalyptic number.

102381619 is a deficient number, since it is larger than the sum of its proper divisors (1).

102381619 is an equidigital number, since it uses as much as digits as its factorization.

102381619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 102381619 is about 10118.3802557524. The cubic root of 102381619 is about 467.8148435379.

The spelling of 102381619 in words is "one hundred two million, three hundred eighty-one thousand, six hundred nineteen".