1103642899 has 2 divisors, whose sum is σ = 1103642900. Its totient is φ = 1103642898.

The previous prime is 1103642789. The next prime is 1103642921. The reversal of 1103642899 is 9982463011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103642899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1103642399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551821449 + 551821450.

It is an arithmetic number, because the mean of its divisors is an integer number (551821450).

Almost surely, 2^1103642899 is an apocalyptic number.

1103642899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103642899 is an equidigital number, since it uses as much as digits as its factorization.

1103642899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1103642899 is about 33221.1212784879. The cubic root of 1103642899 is about 1033.4184029051.

It can be divided in two parts, 11036 and 42899, that added together give a palindrome (53935).

The spelling of 1103642899 in words is "one billion, one hundred three million, six hundred forty-two thousand, eight hundred ninety-nine".