1228857099 has 16 divisors (see below), whose sum is σ = 1674825984. Its totient is φ = 801164000.

The previous prime is 1228857059. The next prime is 1228857101. The reversal of 1228857099 is 9907588221.

It is a cyclic number.

It is not a de Polignac number, because 1228857099 - 2⁸ = 1228856843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228857059) 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, 37024 + ... + 61874.

It is an arithmetic number, because the mean of its divisors is an integer number (104676624).

Almost surely, 2^1228857099 is an apocalyptic number.

1228857099 is a deficient number, since it is larger than the sum of its proper divisors (445968885).

1228857099 is a wasteful number, since it uses less digits than its factorization.

1228857099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25218.

The product of its (nonzero) digits is 725760, while the sum is 51.

The square root of 1228857099 is about 35055.0581086382. The cubic root of 1228857099 is about 1071.1093101315.

The spelling of 1228857099 in words is "one billion, two hundred twenty-eight million, eight hundred fifty-seven thousand, ninety-nine".