1956020977 has 2 divisors, whose sum is σ = 1956020978. Its totient is φ = 1956020976.

The previous prime is 1956020953. The next prime is 1956021019. The reversal of 1956020977 is 7790206591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1290174561 + 665846416 = 35919^2 + 25804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956020977 - 2⁷ = 1956020849 is a prime.

It is not a weakly prime, because it can be changed into another prime (1956026977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978010488 + 978010489.

It is an arithmetic number, because the mean of its divisors is an integer number (978010489).

Almost surely, 2^1956020977 is an apocalyptic number.

It is an amenable number.

1956020977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956020977 is an equidigital number, since it uses as much as digits as its factorization.

1956020977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 1956020977 is about 44226.9259275388. The cubic root of 1956020977 is about 1250.6175033281.

The spelling of 1956020977 in words is "one billion, nine hundred fifty-six million, twenty thousand, nine hundred seventy-seven".