1872137 has 2 divisors, whose sum is σ = 1872138. Its totient is φ = 1872136.

The previous prime is 1872113. The next prime is 1872149. The reversal of 1872137 is 7312781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 929296 = 971^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1872137 - 2¹⁰ = 1871113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1872337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936068 + 936069.

It is an arithmetic number, because the mean of its divisors is an integer number (936069).

2^1872137 is an apocalyptic number.

It is an amenable number.

1872137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872137 is an equidigital number, since it uses as much as digits as its factorization.

1872137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 29.

The square root of 1872137 is about 1368.2605745983. The cubic root of 1872137 is about 123.2478093877.

It can be divided in two parts, 18 and 72137, that multiplied together give a triangular number (1298466 = T₁₆₁₁).

The spelling of 1872137 in words is "one million, eight hundred seventy-two thousand, one hundred thirty-seven".