1129660890 has 32 divisors (see below), whose sum is σ = 2722838976. Its totient is φ = 299948160.

The previous prime is 1129660879. The next prime is 1129660901. The reversal of 1129660890 is 980669211.

It is an interprime number because it is at equal distance from previous prime (1129660879) and next prime (1129660901).

It is a super-2 number, since 2×1129660890² = 2552267452791184200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73816 + ... + 87795.

It is an arithmetic number, because the mean of its divisors is an integer number (85088718).

Almost surely, 2^1129660890 is an apocalyptic number.

1129660890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129660890 is an abundant number, since it is smaller than the sum of its proper divisors (1593178086).

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

1129660890 is a wasteful number, since it uses less digits than its factorization.

1129660890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161854.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1129660890 is about 33610.4282924214. The cubic root of 1129660890 is about 1041.4762350409.

The spelling of 1129660890 in words is "one billion, one hundred twenty-nine million, six hundred sixty thousand, eight hundred ninety".