1621693348 has 12 divisors (see below), whose sum is σ = 3095960112. Its totient is φ = 737133320.

The previous prime is 1621693327. The next prime is 1621693351. The reversal of 1621693348 is 8433961261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18428290 + ... + 18428377.

It is an arithmetic number, because the mean of its divisors is an integer number (257996676).

Almost surely, 2^1621693348 is an apocalyptic number.

It is an amenable number.

1621693348 is a deficient number, since it is larger than the sum of its proper divisors (1474266764).

1621693348 is a wasteful number, since it uses less digits than its factorization.

1621693348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36856682 (or 36856680 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 1621693348 is about 40270.2538854674. The cubic root of 1621693348 is about 1174.8693617850.

The spelling of 1621693348 in words is "one billion, six hundred twenty-one million, six hundred ninety-three thousand, three hundred forty-eight".