1078461961 has 4 divisors (see below), whose sum is σ = 1080822292. Its totient is φ = 1076101632.

The previous prime is 1078461959. The next prime is 1078462043. The reversal of 1078461961 is 1691648701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1691648701 = 2153 ⋅785717.

It can be written as a sum of positive squares in 2 ways, for example, as 804062736 + 274399225 = 28356^2 + 16565^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078461961 - 2¹ = 1078461959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078461061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179480 + ... + 1180393.

It is an arithmetic number, because the mean of its divisors is an integer number (270205573).

Almost surely, 2^1078461961 is an apocalyptic number.

It is an amenable number.

1078461961 is a deficient number, since it is larger than the sum of its proper divisors (2360331).

1078461961 is an equidigital number, since it uses as much as digits as its factorization.

1078461961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360330.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1078461961 is about 32839.9445949594. The cubic root of 1078461961 is about 1025.4982977915.

The spelling of 1078461961 in words is "one billion, seventy-eight million, four hundred sixty-one thousand, nine hundred sixty-one".