1138576890 has 32 divisors (see below), whose sum is σ = 2981002176. Its totient is φ = 276018560.

The previous prime is 1138576871. The next prime is 1138576903. The reversal of 1138576890 is 986758311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1724787 + ... + 1725446.

It is an arithmetic number, because the mean of its divisors is an integer number (93156318).

Almost surely, 2^1138576890 is an apocalyptic number.

1138576890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138576890 is an abundant number, since it is smaller than the sum of its proper divisors (1842425286).

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

1138576890 is a wasteful number, since it uses less digits than its factorization.

1138576890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450254.

The product of its (nonzero) digits is 362880, while the sum is 48.

The square root of 1138576890 is about 33742.8050108464. The cubic root of 1138576890 is about 1044.2090548161.

The spelling of 1138576890 in words is "one billion, one hundred thirty-eight million, five hundred seventy-six thousand, eight hundred ninety".