1641283690 has 16 divisors (see below), whose sum is σ = 3002743080. Its totient is φ = 645750720.

The previous prime is 1641283661. The next prime is 1641283733. The reversal of 1641283690 is 963821461.

It can be written as a sum of positive squares in 4 ways, for example, as 324972729 + 1316310961 = 18027^2 + 36281^2 .

It is a super-2 number, since 2×1641283690² = 5387624302120032200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1344705 + ... + 1345924.

Almost surely, 2^1641283690 is an apocalyptic number.

1641283690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1641283690 is a deficient number, since it is larger than the sum of its proper divisors (1361459390).

1641283690 is a wasteful number, since it uses less digits than its factorization.

1641283690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690697.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1641283690 is about 40512.7595949721. The cubic root of 1641283690 is about 1179.5813151206.

The spelling of 1641283690 in words is "one billion, six hundred forty-one million, two hundred eighty-three thousand, six hundred ninety".