619807398 has 48 divisors (see below), whose sum is σ = 1495226880. Its totient is φ = 167763312.

The previous prime is 619807393. The next prime is 619807411. The reversal of 619807398 is 893708916.

It is a super-2 number, since 2×619807398² = 768322421231060808, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 619807398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (619807393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5278 + ... + 35601.

It is an arithmetic number, because the mean of its divisors is an integer number (31150560).

Almost surely, 2^619807398 is an apocalyptic number.

619807398 is an abundant number, since it is smaller than the sum of its proper divisors (875419482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

619807398 is a wasteful number, since it uses less digits than its factorization.

619807398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40929 (or 40910 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 619807398 is about 24895.9313543398. The cubic root of 619807398 is about 852.6135923604.

It can be divided in two parts, 61980 and 7398, that added together give a triangular number (69378 = T₃₇₂).

The spelling of 619807398 in words is "six hundred nineteen million, eight hundred seven thousand, three hundred ninety-eight".