1870961 has 2 divisors, whose sum is σ = 1870962. Its totient is φ = 1870960.

The previous prime is 1870951. The next prime is 1870991. The reversal of 1870961 is 1690781.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 295936 = 1255^2 + 544^2 .

It is an emirp because it is prime and its reverse (1690781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1870961 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (1870951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 935480 + 935481.

It is an arithmetic number, because the mean of its divisors is an integer number (935481).

2^1870961 is an apocalyptic number.

It is an amenable number.

1870961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1870961 is an equidigital number, since it uses as much as digits as its factorization.

1870961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1870961 is about 1367.8307643857. The cubic root of 1870961 is about 123.2219975689.

The spelling of 1870961 in words is "one million, eight hundred seventy thousand, nine hundred sixty-one".