1872461 has 2 divisors, whose sum is σ = 1872462. Its totient is φ = 1872460.

The previous prime is 1872427. The next prime is 1872463. The reversal of 1872461 is 1642781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1674436 + 198025 = 1294^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872461 - 2¹⁰ = 1871437 is a prime.

It is a super-2 number, since 2×1872461² = 7012220393042, which contains 22 as substring.

Together with 1872463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1872463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936230 + 936231.

It is an arithmetic number, because the mean of its divisors is an integer number (936231).

2^1872461 is an apocalyptic number.

It is an amenable number.

1872461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872461 is an equidigital number, since it uses as much as digits as its factorization.

1872461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 1872461 is about 1368.3789679763. The cubic root of 1872461 is about 123.2549189078.

The spelling of 1872461 in words is "one million, eight hundred seventy-two thousand, four hundred sixty-one".