1641375 has 24 divisors (see below), whose sum is σ = 2960880. Its totient is φ = 874800.

The previous prime is 1641373. The next prime is 1641377. The reversal of 1641375 is 5731461.

It is an interprime number because it is at equal distance from previous prime (1641373) and next prime (1641377).

It is not a de Polignac number, because 1641375 - 2¹ = 1641373 is a prime.

It is a super-2 number, since 2×1641375² = 5388223781250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (123370).

2^1641375 is an apocalyptic number.

1641375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1641375 is a deficient number, since it is larger than the sum of its proper divisors (1319505).

1641375 is a wasteful number, since it uses less digits than its factorization.

1641375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480 (or 1467 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1641375 is about 1281.1615823150. The cubic root of 1641375 is about 117.9603189375.

It can be divided in two parts, 1641 and 375, that added together give a triangular number (2016 = T₆₃).

The spelling of 1641375 in words is "one million, six hundred forty-one thousand, three hundred seventy-five".