1115426403 has 64 divisors (see below), whose sum is σ = 2041016320. Its totient is φ = 586279296.

The previous prime is 1115426371. The next prime is 1115426413. The reversal of 1115426403 is 3046245111.

It is a happy number.

1115426403 is a `hidden beast` number, since 1 + 1 + 15 + 4 + 2 + 640 + 3 = 666.

It is a Cunningham number, because it is equal to 33398²-1.

It is not a de Polignac number, because 1115426403 - 2⁵ = 1115426371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1115426413) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 901101 + ... + 902337.

It is an arithmetic number, because the mean of its divisors is an integer number (31890880).

Almost surely, 2^1115426403 is an apocalyptic number.

1115426403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1115426403 is a deficient number, since it is larger than the sum of its proper divisors (925589917).

1115426403 is a wasteful number, since it uses less digits than its factorization.

1115426403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1627 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1115426403 is about 33397.9999850290. Note that the first 4 decimals coincide. The cubic root of 1115426403 is about 1037.0832980473.

The spelling of 1115426403 in words is "one billion, one hundred fifteen million, four hundred twenty-six thousand, four hundred three".