1520113650 has 96 divisors (see below), whose sum is σ = 4354596288. Its totient is φ = 346828800.

The previous prime is 1520113643. The next prime is 1520113691. The reversal of 1520113650 is 563110251.

1520113650 = T₃₉₄ + T₃₉₅ + ... + T₂₀₉₃.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520113650.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 954 + ... + 55146.

It is an arithmetic number, because the mean of its divisors is an integer number (45360378).

Almost surely, 2^1520113650 is an apocalyptic number.

1520113650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520113650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177298144).

1520113650 is an abundant number, since it is smaller than the sum of its proper divisors (2834482638).

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

1520113650 is a wasteful number, since it uses less digits than its factorization.

1520113650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54236 (or 54231 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1520113650 is about 38988.6348824885. The cubic root of 1520113650 is about 1149.8080713096.

The spelling of 1520113650 in words is "one billion, five hundred twenty million, one hundred thirteen thousand, six hundred fifty".