1960278761 has 12 divisors (see below), whose sum is σ = 2288455380. Its totient is φ = 1674247680.

The previous prime is 1960278713. The next prime is 1960278763. The reversal of 1960278761 is 1678720691.

It can be written as a sum of positive squares in 2 ways, for example, as 1322413225 + 637865536 = 36365^2 + 25256^2 .

It is not a de Polignac number, because 1960278761 - 2²⁶ = 1893169897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1960278763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57416 + ... + 84953.

It is an arithmetic number, because the mean of its divisors is an integer number (190704615).

Almost surely, 2^1960278761 is an apocalyptic number.

It is an amenable number.

1960278761 is a deficient number, since it is larger than the sum of its proper divisors (328176619).

1960278761 is a wasteful number, since it uses less digits than its factorization.

1960278761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142664 (or 142657 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 1960278761 is about 44275.0354150056. The cubic root of 1960278761 is about 1251.5242761902.

The spelling of 1960278761 in words is "one billion, nine hundred sixty million, two hundred seventy-eight thousand, seven hundred sixty-one".