1151207611 has 4 divisors (see below), whose sum is σ = 1152705400. Its totient is φ = 1149709824.

The previous prime is 1151207597. The next prime is 1151207621. The reversal of 1151207611 is 1167021511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1167021511 = 307 ⋅3801373.

It is a cyclic number.

It is not a de Polignac number, because 1151207611 - 2¹³ = 1151199419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1151207621) 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, 747741 + ... + 749278.

It is an arithmetic number, because the mean of its divisors is an integer number (288176350).

Almost surely, 2^1151207611 is an apocalyptic number.

1151207611 is a deficient number, since it is larger than the sum of its proper divisors (1497789).

1151207611 is an equidigital number, since it uses as much as digits as its factorization.

1151207611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497788.

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1151207611 is about 33929.4504965819. The cubic root of 1151207611 is about 1048.0561499328.

The spelling of 1151207611 in words is "one billion, one hundred fifty-one million, two hundred seven thousand, six hundred eleven".