1516222109 has 8 divisors (see below), whose sum is σ = 1583736960. Its totient is φ = 1449722736.

The previous prime is 1516222093. The next prime is 1516222133. The reversal of 1516222109 is 9012226151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1516222109 - 2⁴ = 1516222093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516222009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250817 + ... + 256790.

It is an arithmetic number, because the mean of its divisors is an integer number (197967120).

Almost surely, 2^1516222109 is an apocalyptic number.

It is an amenable number.

1516222109 is a deficient number, since it is larger than the sum of its proper divisors (67514851).

1516222109 is a wasteful number, since it uses less digits than its factorization.

1516222109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507739.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1516222109 is about 38938.6968066472. The cubic root of 1516222109 is about 1148.8260506556.

The spelling of 1516222109 in words is "one billion, five hundred sixteen million, two hundred twenty-two thousand, one hundred nine".