1020860945 has 8 divisors (see below), whose sum is σ = 1319266536. Its totient is φ = 753866496.

The previous prime is 1020860941. The next prime is 1020860963. The reversal of 1020860945 is 5490680201.

It can be written as a sum of positive squares in 4 ways, for example, as 9684544 + 1011176401 = 3112^2 + 31799^2 .

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 1020860945 - 2² = 1020860941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020860941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7852712 + ... + 7852841.

It is an arithmetic number, because the mean of its divisors is an integer number (164908317).

Almost surely, 2^1020860945 is an apocalyptic number.

It is an amenable number.

1020860945 is a deficient number, since it is larger than the sum of its proper divisors (298405591).

1020860945 is a wasteful number, since it uses less digits than its factorization.

1020860945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15705571.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1020860945 is about 31950.9146191467. The cubic root of 1020860945 is about 1006.9058478176.

The spelling of 1020860945 in words is "one billion, twenty million, eight hundred sixty thousand, nine hundred forty-five".