1682290640 has 40 divisors (see below), whose sum is σ = 4037503488. Its totient is φ = 651208320.

The previous prime is 1682290627. The next prime is 1682290651. The reversal of 1682290640 is 460922861.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1682290594 and 1682290603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336692 + ... + 341651.

Almost surely, 2^1682290640 is an apocalyptic number.

1682290640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1682290640 is an abundant number, since it is smaller than the sum of its proper divisors (2355212848).

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

1682290640 is a wasteful number, since it uses less digits than its factorization.

1682290640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678387 (or 678381 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1682290640 is about 41015.7364922294. The cubic root of 1682290640 is about 1189.3244382503.

The spelling of 1682290640 in words is "one billion, six hundred eighty-two million, two hundred ninety thousand, six hundred forty".