1020166057 has 4 divisors (see below), whose sum is σ = 1022296320. Its totient is φ = 1018035796.

The previous prime is 1020166051. The next prime is 1020166097. The reversal of 1020166057 is 7506610201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7506610201 = 521 ⋅14408081.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020166057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020166051) 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, 1064413 + ... + 1065370.

It is an arithmetic number, because the mean of its divisors is an integer number (255574080).

Almost surely, 2^1020166057 is an apocalyptic number.

It is an amenable number.

1020166057 is a deficient number, since it is larger than the sum of its proper divisors (2130263).

1020166057 is an equidigital number, since it uses as much as digits as its factorization.

1020166057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130262.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1020166057 is about 31940.0384627195. The cubic root of 1020166057 is about 1006.6773329840.

Adding to 1020166057 its reverse (7506610201), we get a palindrome (8526776258).

The spelling of 1020166057 in words is "one billion, twenty million, one hundred sixty-six thousand, fifty-seven".