1151485813 has 2 divisors, whose sum is σ = 1151485814. Its totient is φ = 1151485812.

The previous prime is 1151485807. The next prime is 1151485817. The reversal of 1151485813 is 3185841511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770728644 + 380757169 = 27762^2 + 19513^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151485813 - 2⁵ = 1151485781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151485817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575742906 + 575742907.

It is an arithmetic number, because the mean of its divisors is an integer number (575742907).

Almost surely, 2^1151485813 is an apocalyptic number.

It is an amenable number.

1151485813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151485813 is an equidigital number, since it uses as much as digits as its factorization.

1151485813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19200, while the sum is 37.

The square root of 1151485813 is about 33933.5499616530. The cubic root of 1151485813 is about 1048.1405679041.

The spelling of 1151485813 in words is "one billion, one hundred fifty-one million, four hundred eighty-five thousand, eight hundred thirteen".