187381741 has 2 divisors, whose sum is σ = 187381742. Its totient is φ = 187381740.

The previous prime is 187381723. The next prime is 187381751. The reversal of 187381741 is 147183781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113507716 + 73874025 = 10654^2 + 8595^2 .

It is a cyclic number.

It is not a de Polignac number, because 187381741 - 2¹⁹ = 186857453 is a prime.

It is a super-3 number, since 3×187381741³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 187381694 and 187381703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (187381721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93690870 + 93690871.

It is an arithmetic number, because the mean of its divisors is an integer number (93690871).

Almost surely, 2^187381741 is an apocalyptic number.

It is an amenable number.

187381741 is a deficient number, since it is larger than the sum of its proper divisors (1).

187381741 is an equidigital number, since it uses as much as digits as its factorization.

187381741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 40.

The square root of 187381741 is about 13688.7450483965. The cubic root of 187381741 is about 572.2367646259.

The spelling of 187381741 in words is "one hundred eighty-seven million, three hundred eighty-one thousand, seven hundred forty-one".