1089812650 has 12 divisors (see below), whose sum is σ = 2027051622. Its totient is φ = 435925040.

The previous prime is 1089812599. The next prime is 1089812651. The reversal of 1089812650 is 562189801.

It can be written as a sum of positive squares in 3 ways, for example, as 790903129 + 298909521 = 28123^2 + 17289^2 .

It is a super-2 number, since 2×1089812650² = 2375383224200045000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1089812651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10898077 + ... + 10898176.

Almost surely, 2^1089812650 is an apocalyptic number.

1089812650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089812650 is a deficient number, since it is larger than the sum of its proper divisors (937238972).

1089812650 is a wasteful number, since it uses less digits than its factorization.

1089812650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21796265 (or 21796260 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 1089812650 is about 33012.3105825690. The cubic root of 1089812650 is about 1029.0834999388.

The spelling of 1089812650 in words is "one billion, eighty-nine million, eight hundred twelve thousand, six hundred fifty".