1081620577 has 8 divisors (see below), whose sum is σ = 1091978720. Its totient is φ = 1071299520.

The previous prime is 1081620523. The next prime is 1081620587. The reversal of 1081620577 is 7750261801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081620577 - 2²⁷ = 947402849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081620587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51202 + ... + 69172.

It is an arithmetic number, because the mean of its divisors is an integer number (136497340).

Almost surely, 2^1081620577 is an apocalyptic number.

It is an amenable number.

1081620577 is a deficient number, since it is larger than the sum of its proper divisors (10358143).

1081620577 is a wasteful number, since it uses less digits than its factorization.

1081620577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18543.

The product of its (nonzero) digits is 23520, while the sum is 37.

The square root of 1081620577 is about 32888.0005017027. Note that the first 3 decimals coincide. The cubic root of 1081620577 is about 1026.4984870387.

The spelling of 1081620577 in words is "one billion, eighty-one million, six hundred twenty thousand, five hundred seventy-seven".