1840201541 has 2 divisors, whose sum is σ = 1840201542. Its totient is φ = 1840201540.

The previous prime is 1840201513. The next prime is 1840201577. The reversal of 1840201541 is 1451020481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1328310916 + 511890625 = 36446^2 + 22625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1840201541 - 2⁶ = 1840201477 is a prime.

It is a super-2 number, since 2×1840201541² = 6772683422997549362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1840201541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1840201511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920100770 + 920100771.

It is an arithmetic number, because the mean of its divisors is an integer number (920100771).

Almost surely, 2^1840201541 is an apocalyptic number.

It is an amenable number.

1840201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840201541 is an equidigital number, since it uses as much as digits as its factorization.

1840201541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1840201541 is about 42897.5703391229. The cubic root of 1840201541 is about 1225.4298735111.

The spelling of 1840201541 in words is "one billion, eight hundred forty million, two hundred one thousand, five hundred forty-one".