1078420773 has 4 divisors (see below), whose sum is σ = 1437894368. Its totient is φ = 718947180.

The previous prime is 1078420723. The next prime is 1078420799. The reversal of 1078420773 is 3770248701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1078420773 - 2⁹ = 1078420261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078420723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179736793 + ... + 179736798.

It is an arithmetic number, because the mean of its divisors is an integer number (359473592).

Almost surely, 2^1078420773 is an apocalyptic number.

It is an amenable number.

1078420773 is a deficient number, since it is larger than the sum of its proper divisors (359473595).

1078420773 is an equidigital number, since it uses as much as digits as its factorization.

1078420773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359473594.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 1078420773 is about 32839.3174868175. The cubic root of 1078420773 is about 1025.4852425446.

The spelling of 1078420773 in words is "one billion, seventy-eight million, four hundred twenty thousand, seven hundred seventy-three".