1023077778 has 16 divisors (see below), whose sum is σ = 2047743936. Its totient is φ = 340761200.

The previous prime is 1023077773. The next prime is 1023077791. The reversal of 1023077778 is 8777703201.

It is not an unprimeable number, because it can be changed into a prime (1023077773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57726 + ... + 73337.

It is an arithmetic number, because the mean of its divisors is an integer number (127983996).

Almost surely, 2^1023077778 is an apocalyptic number.

1023077778 is an abundant number, since it is smaller than the sum of its proper divisors (1024666158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023077778 is a wasteful number, since it uses less digits than its factorization.

1023077778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132369.

The product of its (nonzero) digits is 115248, while the sum is 42.

The square root of 1023077778 is about 31985.5870354133. The cubic root of 1023077778 is about 1007.6341639007.

The spelling of 1023077778 in words is "one billion, twenty-three million, seventy-seven thousand, seven hundred seventy-eight".