1620003694 has 8 divisors (see below), whose sum is σ = 2430231048. Its totient is φ = 809926680.

The previous prime is 1620003691. The next prime is 1620003703. The reversal of 1620003694 is 4963000261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620003691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4992 + ... + 57139.

It is an arithmetic number, because the mean of its divisors is an integer number (303778881).

Almost surely, 2^1620003694 is an apocalyptic number.

1620003694 is a deficient number, since it is larger than the sum of its proper divisors (810227354).

1620003694 is a wasteful number, since it uses less digits than its factorization.

1620003694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75170.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1620003694 is about 40249.2694840540. The cubic root of 1620003694 is about 1174.4611850365.

The spelling of 1620003694 in words is "one billion, six hundred twenty million, three thousand, six hundred ninety-four".