1678980290 has 32 divisors (see below), whose sum is σ = 3299241456. Its totient is φ = 611435520.

The previous prime is 1678980263. The next prime is 1678980293. The reversal of 1678980290 is 920898761.

It can be written as a sum of positive squares in 8 ways, for example, as 467035321 + 1211944969 = 21611^2 + 34813^2 .

It is not an unprimeable number, because it can be changed into a prime (1678980293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78971 + ... + 97950.

Almost surely, 2^1678980290 is an apocalyptic number.

1678980290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1678980290 is a deficient number, since it is larger than the sum of its proper divisors (1620261166).

1678980290 is a wasteful number, since it uses less digits than its factorization.

1678980290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177014.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1678980290 is about 40975.3619874187. The cubic root of 1678980290 is about 1188.5438229587.

It can be divided in two parts, 16789 and 80290, that added together give a palindrome (97079).

The spelling of 1678980290 in words is "one billion, six hundred seventy-eight million, nine hundred eighty thousand, two hundred ninety".