1081290238 has 16 divisors (see below), whose sum is σ = 1854133344. Its totient is φ = 463286880.

The previous prime is 1081290233. The next prime is 1081290269. The reversal of 1081290238 is 8320921801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081290233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61608 + ... + 77188.

It is an arithmetic number, because the mean of its divisors is an integer number (115883334).

Almost surely, 2^1081290238 is an apocalyptic number.

1081290238 is a deficient number, since it is larger than the sum of its proper divisors (772843106).

1081290238 is a wasteful number, since it uses less digits than its factorization.

1081290238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20547.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1081290238 is about 32882.9779369205. The cubic root of 1081290238 is about 1026.3939750322.

The spelling of 1081290238 in words is "one billion, eighty-one million, two hundred ninety thousand, two hundred thirty-eight".