1151203099 has 4 divisors (see below), whose sum is σ = 1154162880. Its totient is φ = 1148243320.

The previous prime is 1151203063. The next prime is 1151203117. The reversal of 1151203099 is 9903021511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9903021511 = 21313 ⋅464647.

It is a cyclic number.

It is not a de Polignac number, because 1151203099 - 2²⁵ = 1117648667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1151203099.

It is not an unprimeable number, because it can be changed into a prime (1151203799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1479307 + ... + 1480084.

It is an arithmetic number, because the mean of its divisors is an integer number (288540720).

Almost surely, 2^1151203099 is an apocalyptic number.

1151203099 is a deficient number, since it is larger than the sum of its proper divisors (2959781).

1151203099 is an equidigital number, since it uses as much as digits as its factorization.

1151203099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959780.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 1151203099 is about 33929.3840056079. The cubic root of 1151203099 is about 1048.0547806937.

The spelling of 1151203099 in words is "one billion, one hundred fifty-one million, two hundred three thousand, ninety-nine".