1682749650 has 48 divisors (see below), whose sum is σ = 4317134400. Its totient is φ = 433258560.

The previous prime is 1682749631. The next prime is 1682749669. The reversal of 1682749650 is 569472861.

It is an interprime number because it is at equal distance from previous prime (1682749631) and next prime (1682749669).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1682749650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189070 + ... + 197769.

It is an arithmetic number, because the mean of its divisors is an integer number (89940300).

Almost surely, 2^1682749650 is an apocalyptic number.

1682749650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1682749650 is an abundant number, since it is smaller than the sum of its proper divisors (2634384750).

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

1682749650 is a wasteful number, since it uses less digits than its factorization.

1682749650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386883 (or 386878 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 1682749650 is about 41021.3316458644. The cubic root of 1682749650 is about 1189.4325967643.

The spelling of 1682749650 in words is "one billion, six hundred eighty-two million, seven hundred forty-nine thousand, six hundred fifty".