1521422788 has 12 divisors (see below), whose sum is σ = 2662894080. Its totient is φ = 760595912.

The previous prime is 1521422783. The next prime is 1521422807. The reversal of 1521422788 is 8872241251.

It is a self number, because there is not a number n which added to its sum of digits gives 1521422788.

It is not an unprimeable number, because it can be changed into a prime (1521422783) 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, 5253 + ... + 55411.

It is an arithmetic number, because the mean of its divisors is an integer number (221907840).

Almost surely, 2^1521422788 is an apocalyptic number.

It is an amenable number.

1521422788 is a deficient number, since it is larger than the sum of its proper divisors (1141471292).

1521422788 is a wasteful number, since it uses less digits than its factorization.

1521422788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57746 (or 57744 counting only the distinct ones).

The product of its digits is 71680, while the sum is 40.

The square root of 1521422788 is about 39005.4199823563. The cubic root of 1521422788 is about 1150.1380522359.

The spelling of 1521422788 in words is "one billion, five hundred twenty-one million, four hundred twenty-two thousand, seven hundred eighty-eight".