1640103520 has 48 divisors (see below), whose sum is σ = 4226998608. Its totient is φ = 596400640.

The previous prime is 1640103499. The next prime is 1640103529. The reversal of 1640103520 is 253010461.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1640103491 and 1640103500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640103529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464179 + ... + 467698.

It is an arithmetic number, because the mean of its divisors is an integer number (88062471).

Almost surely, 2^1640103520 is an apocalyptic number.

1640103520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1640103520 is an abundant number, since it is smaller than the sum of its proper divisors (2586895088).

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

1640103520 is a wasteful number, since it uses less digits than its factorization.

1640103520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931903 (or 931895 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1640103520 is about 40498.1915645625. The cubic root of 1640103520 is about 1179.2985201578.

Adding to 1640103520 its reverse (253010461), we get a palindrome (1893113981).

The spelling of 1640103520 in words is "one billion, six hundred forty million, one hundred three thousand, five hundred twenty".