1081236490 has 32 divisors (see below), whose sum is σ = 1963906560. Its totient is φ = 428582784.

The previous prime is 1081236449. The next prime is 1081236491. The reversal of 1081236490 is 946321801.

It is not an unprimeable number, because it can be changed into a prime (1081236491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682239 + ... + 683821.

It is an arithmetic number, because the mean of its divisors is an integer number (61372080).

Almost surely, 2^1081236490 is an apocalyptic number.

1081236490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081236490 is a deficient number, since it is larger than the sum of its proper divisors (882670070).

1081236490 is a wasteful number, since it uses less digits than its factorization.

1081236490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1081236490 is about 32882.1606650171. The cubic root of 1081236490 is about 1026.3769683318.

The spelling of 1081236490 in words is "one billion, eighty-one million, two hundred thirty-six thousand, four hundred ninety".