1640130 has 32 divisors (see below), whose sum is σ = 4109184. Its totient is φ = 418176.

The previous prime is 1640083. The next prime is 1640131. The reversal of 1640130 is 310461.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1640131) 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, 499 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (128412).

2^1640130 is an apocalyptic number.

1640130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640130 is an abundant number, since it is smaller than the sum of its proper divisors (2469054).

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

1640130 is a wasteful number, since it uses less digits than its factorization.

1640130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1640130 is about 1280.6756029534. The cubic root of 1640130 is about 117.9304866842.

Adding to 1640130 its reverse (310461), we get a palindrome (1950591).

It can be divided in two parts, 1640 and 130, that added together give a triangular number (1770 = T₅₉).

The spelling of 1640130 in words is "one million, six hundred forty thousand, one hundred thirty".