1520999996 has 48 divisors (see below), whose sum is σ = 2988018432. Its totient is φ = 673920000.

The previous prime is 1520999993. The next prime is 1521000017. The reversal of 1520999996 is 6999990251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520999993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68246 + ... + 87746.

It is an arithmetic number, because the mean of its divisors is an integer number (62250384).

Almost surely, 2^1520999996 is an apocalyptic number.

It is an amenable number.

1520999996 is a deficient number, since it is larger than the sum of its proper divisors (1467018436).

1520999996 is a wasteful number, since it uses less digits than its factorization.

1520999996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19590 (or 19588 counting only the distinct ones).

The product of its (nonzero) digits is 3542940, while the sum is 59.

The square root of 1520999996 is about 38999.9999487179. Note that the first 4 decimals coincide. The cubic root of 1520999996 is about 1150.0315041149.

The spelling of 1520999996 in words is "one billion, five hundred twenty million, nine hundred ninety-nine thousand, nine hundred ninety-six".