1153399911 has 8 divisors (see below), whose sum is σ = 1548188400. Its totient is φ = 763772352.

The previous prime is 1153399889. The next prime is 1153399943. The reversal of 1153399911 is 1199933511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1153399911 - 2⁶ = 1153399847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153399991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1289710 + ... + 1290603.

It is an arithmetic number, because the mean of its divisors is an integer number (193523550).

Almost surely, 2^1153399911 is an apocalyptic number.

1153399911 is a deficient number, since it is larger than the sum of its proper divisors (394788489).

1153399911 is a wasteful number, since it uses less digits than its factorization.

1153399911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2580465.

The product of its digits is 32805, while the sum is 42.

The square root of 1153399911 is about 33961.7418722892. The cubic root of 1153399911 is about 1048.7210159703.

It can be divided in two parts, 115339 and 9911, that added together give a triangular number (125250 = T₅₀₀).

The spelling of 1153399911 in words is "one billion, one hundred fifty-three million, three hundred ninety-nine thousand, nine hundred eleven".