1671380690 has 32 divisors (see below), whose sum is σ = 3508444800. Its totient is φ = 573043632.

The previous prime is 1671380681. The next prime is 1671380701. The reversal of 1671380690 is 960831761.

It is a super-2 number, since 2×1671380690² = 5587026821809752200, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 240212 + ... + 247071.

It is an arithmetic number, because the mean of its divisors is an integer number (109638900).

Almost surely, 2^1671380690 is an apocalyptic number.

1671380690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1671380690 is an abundant number, since it is smaller than the sum of its proper divisors (1837064110).

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

1671380690 is an equidigital number, since it uses as much as digits as its factorization.

1671380690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487311 (or 487297 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1671380690 is about 40882.5230385797. The cubic root of 1671380690 is about 1186.7478678005.

The spelling of 1671380690 in words is "one billion, six hundred seventy-one million, three hundred eighty thousand, six hundred ninety".