1012778290 has 8 divisors (see below), whose sum is σ = 1823000940. Its totient is φ = 405111312.

The previous prime is 1012778287. The next prime is 1012778309. The reversal of 1012778290 is 928772101.

It can be written as a sum of positive squares in 2 ways, for example, as 971007921 + 41770369 = 31161^2 + 6463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50638905 + ... + 50638924.

Almost surely, 2^1012778290 is an apocalyptic number.

1012778290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012778290 is a deficient number, since it is larger than the sum of its proper divisors (810222650).

1012778290 is a wasteful number, since it uses less digits than its factorization.

1012778290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101277836.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 1012778290 is about 31824.1777584276. The cubic root of 1012778290 is about 1004.2414149653.

The spelling of 1012778290 in words is "one billion, twelve million, seven hundred seventy-eight thousand, two hundred ninety".