1520065830 has 32 divisors (see below), whose sum is σ = 3680450784. Its totient is φ = 401762816.

The previous prime is 1520065823. The next prime is 1520065831. The reversal of 1520065830 is 385600251.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520065831) 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, 220809 + ... + 227588.

It is an arithmetic number, because the mean of its divisors is an integer number (115014087).

Almost surely, 2^1520065830 is an apocalyptic number.

1520065830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1520065830 is an abundant number, since it is smaller than the sum of its proper divisors (2160384954).

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

1520065830 is a wasteful number, since it uses less digits than its factorization.

1520065830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448520.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1520065830 is about 38988.0216220316. The cubic root of 1520065830 is about 1149.7960142289.

The spelling of 1520065830 in words is "one billion, five hundred twenty million, sixty-five thousand, eight hundred thirty".