1081764379 has 4 divisors (see below), whose sum is σ = 1097910184. Its totient is φ = 1065618576.

The previous prime is 1081764367. The next prime is 1081764389. The reversal of 1081764379 is 9734671801.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081764379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081764319) 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, 8072802 + ... + 8072935.

It is an arithmetic number, because the mean of its divisors is an integer number (274477546).

Almost surely, 2^1081764379 is an apocalyptic number.

1081764379 is a deficient number, since it is larger than the sum of its proper divisors (16145805).

1081764379 is an equidigital number, since it uses as much as digits as its factorization.

1081764379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16145804.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 1081764379 is about 32890.1866671504. The cubic root of 1081764379 is about 1026.5439761863.

The spelling of 1081764379 in words is "one billion, eighty-one million, seven hundred sixty-four thousand, three hundred seventy-nine".