390105745919 has 4 divisors (see below), whose sum is σ = 390108012360. Its totient is φ = 390103479480.

The previous prime is 390105745879. The next prime is 390105745921. The reversal of 390105745919 is 919547501093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919547501093 = 13 ⋅70734423161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390105745919 is a prime.

It is a super-2 number, since 2×390105745919² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390105745979) 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 in 3 ways as a sum of consecutive naturals, for example, 851729 + ... + 1227050.

It is an arithmetic number, because the mean of its divisors is an integer number (97527003090).

Almost surely, 2^390105745919 is an apocalyptic number.

390105745919 is a deficient number, since it is larger than the sum of its proper divisors (2266441).

390105745919 is a wasteful number, since it uses less digits than its factorization.

390105745919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266440.

The product of its (nonzero) digits is 1530900, while the sum is 53.

The spelling of 390105745919 in words is "three hundred ninety billion, one hundred five million, seven hundred forty-five thousand, nine hundred nineteen".