1164780842 has 4 divisors (see below), whose sum is σ = 1747171266. Its totient is φ = 582390420.

The previous prime is 1164780833. The next prime is 1164780847. The reversal of 1164780842 is 2480874611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2480874611 = 3623 ⋅684757.

It can be written as a sum of positive squares in only one way, i.e., 1096205881 + 68574961 = 33109^2 + 8281^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1164780842.

It is not an unprimeable number, because it can be changed into a prime (1164780847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291195209 + ... + 291195212.

Almost surely, 2^1164780842 is an apocalyptic number.

1164780842 is a deficient number, since it is larger than the sum of its proper divisors (582390424).

1164780842 is an equidigital number, since it uses as much as digits as its factorization.

1164780842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582390423.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1164780842 is about 34128.8857421393. The cubic root of 1164780842 is about 1052.1590772033.

The spelling of 1164780842 in words is "one billion, one hundred sixty-four million, seven hundred eighty thousand, eight hundred forty-two".