100145819 has 2 divisors, whose sum is σ = 100145820. Its totient is φ = 100145818.

The previous prime is 100145813. The next prime is 100145831. The reversal of 100145819 is 918541001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100145819 - 2⁴ = 100145803 is a prime.

It is a super-2 number, since 2×100145819² = 20058370126361522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100145791 and 100145800.

It is not a weakly prime, because it can be changed into another prime (100145813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50072909 + 50072910.

It is an arithmetic number, because the mean of its divisors is an integer number (50072910).

Almost surely, 2^100145819 is an apocalyptic number.

100145819 is a deficient number, since it is larger than the sum of its proper divisors (1).

100145819 is an equidigital number, since it uses as much as digits as its factorization.

100145819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 100145819 is about 10007.2882940385. The cubic root of 100145819 is about 464.3843844030.

The spelling of 100145819 in words is "one hundred million, one hundred forty-five thousand, eight hundred nineteen".