1621416598 has 24 divisors (see below), whose sum is σ = 2490741288. Its totient is φ = 791611392.

The previous prime is 1621416581. The next prime is 1621416607. The reversal of 1621416598 is 8956141261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1443265 + ... + 1444387.

It is an arithmetic number, because the mean of its divisors is an integer number (103780887).

Almost surely, 2^1621416598 is an apocalyptic number.

1621416598 is a deficient number, since it is larger than the sum of its proper divisors (869324690).

1621416598 is a wasteful number, since it uses less digits than its factorization.

1621416598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1435 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 1621416598 is about 40266.8175797393. The cubic root of 1621416598 is about 1174.8025255582.

The spelling of 1621416598 in words is "one billion, six hundred twenty-one million, four hundred sixteen thousand, five hundred ninety-eight".