1146379681 has 4 divisors (see below), whose sum is σ = 1146644100. Its totient is φ = 1146115264.

The previous prime is 1146379667. The next prime is 1146379691. The reversal of 1146379681 is 1869736411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67914081 + 1078465600 = 8241^2 + 32840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146379681 - 2¹¹ = 1146377633 is a prime.

It is a super-2 number, since 2×1146379681² = 2628372746019323522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1146379601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125596 + ... + 134413.

It is an arithmetic number, because the mean of its divisors is an integer number (286661025).

Almost surely, 2^1146379681 is an apocalyptic number.

It is an amenable number.

1146379681 is a deficient number, since it is larger than the sum of its proper divisors (264419).

1146379681 is an equidigital number, since it uses as much as digits as its factorization.

1146379681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264418.

The product of its digits is 217728, while the sum is 46.

The square root of 1146379681 is about 33858.2291474318. The cubic root of 1146379681 is about 1046.5889857536.

The spelling of 1146379681 in words is "one billion, one hundred forty-six million, three hundred seventy-nine thousand, six hundred eighty-one".