1090400264 has 16 divisors (see below), whose sum is σ = 2164765500. Its totient is φ = 513129472.

The previous prime is 1090400263. The next prime is 1090400287. The reversal of 1090400264 is 4620040901.

It can be written as a sum of positive squares in 2 ways, for example, as 1065500164 + 24900100 = 32642^2 + 4990^2 .

It is not an unprimeable number, because it can be changed into a prime (1090400263) 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 3 ways as a sum of consecutive naturals, for example, 4008689 + ... + 4008960.

Almost surely, 2^1090400264 is an apocalyptic number.

It is an amenable number.

1090400264 is a deficient number, since it is larger than the sum of its proper divisors (1074365236).

1090400264 is a wasteful number, since it uses less digits than its factorization.

1090400264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8017672 (or 8017668 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1090400264 is about 33021.2093055357. The cubic root of 1090400264 is about 1029.2684232285.

The spelling of 1090400264 in words is "one billion, ninety million, four hundred thousand, two hundred sixty-four".