1129205154 has 48 divisors (see below), whose sum is σ = 2837024064. Its totient is φ = 293298720.

The previous prime is 1129205141. The next prime is 1129205167. The reversal of 1129205154 is 4515029211.

It is an interprime number because it is at equal distance from previous prime (1129205141) and next prime (1129205167).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106017 + ... + 116180.

It is an arithmetic number, because the mean of its divisors is an integer number (59104668).

Almost surely, 2^1129205154 is an apocalyptic number.

1129205154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1129205154 is an abundant number, since it is smaller than the sum of its proper divisors (1707818910).

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

1129205154 is a wasteful number, since it uses less digits than its factorization.

1129205154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222231 (or 222220 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 1129205154 is about 33603.6479269736. The cubic root of 1129205154 is about 1041.3361629009.

The spelling of 1129205154 in words is "one billion, one hundred twenty-nine million, two hundred five thousand, one hundred fifty-four".