1102157209 has 16 divisors (see below), whose sum is σ = 1235329920. Its totient is φ = 978243840.

The previous prime is 1102157183. The next prime is 1102157213. The reversal of 1102157209 is 9027512011.

It is a cyclic number.

It is not a de Polignac number, because 1102157209 - 2⁹ = 1102156697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102157219) 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, 4797 + ... + 47194.

It is an arithmetic number, because the mean of its divisors is an integer number (77208120).

Almost surely, 2^1102157209 is an apocalyptic number.

It is an amenable number.

1102157209 is a deficient number, since it is larger than the sum of its proper divisors (133172711).

1102157209 is a wasteful number, since it uses less digits than its factorization.

1102157209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52080.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1102157209 is about 33198.7531241762. The cubic root of 1102157209 is about 1032.9544760177.

The spelling of 1102157209 in words is "one billion, one hundred two million, one hundred fifty-seven thousand, two hundred nine".