1613000720 has 40 divisors (see below), whose sum is σ = 3803060160. Its totient is φ = 636110720.

The previous prime is 1613000717. The next prime is 1613000743. The reversal of 1613000720 is 270003161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1613000692 and 1613000701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136310 + ... + 147669.

It is an arithmetic number, because the mean of its divisors is an integer number (95076504).

Almost surely, 2^1613000720 is an apocalyptic number.

1613000720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1613000720 is an abundant number, since it is smaller than the sum of its proper divisors (2190059440).

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

1613000720 is a wasteful number, since it uses less digits than its factorization.

1613000720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284063 (or 284057 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1613000720 is about 40162.1802197042. The cubic root of 1613000720 is about 1172.7664150329.

Adding to 1613000720 its reverse (270003161), we get a palindrome (1883003881).

The spelling of 1613000720 in words is "one billion, six hundred thirteen million, seven hundred twenty", and thus it is an aban number.