100540019 has 2 divisors, whose sum is σ = 100540020. Its totient is φ = 100540018.

The previous prime is 100540009. The next prime is 100540031. The reversal of 100540019 is 910045001.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100540019 is a prime.

It is a super-2 number, since 2×100540019² = 20216590841040722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100540009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50270009 + 50270010.

It is an arithmetic number, because the mean of its divisors is an integer number (50270010).

Almost surely, 2^100540019 is an apocalyptic number.

100540019 is a deficient number, since it is larger than the sum of its proper divisors (1).

100540019 is an equidigital number, since it uses as much as digits as its factorization.

100540019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 100540019 is about 10026.9645955294. The cubic root of 100540019 is about 464.9928992634.

The spelling of 100540019 in words is "one hundred million, five hundred forty thousand, nineteen".