138003019 has 8 divisors (see below), whose sum is σ = 172055808. Its totient is φ = 107534760.

The previous prime is 138002999. The next prime is 138003029. The reversal of 138003019 is 910300831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138003019 - 2⁵ = 138002987 is a prime.

It is a super-2 number, since 2×138003019² = 38089666506228722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138002984 and 138003002.

It is not an unprimeable number, because it can be changed into a prime (138003029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896047 + ... + 896200.

It is an arithmetic number, because the mean of its divisors is an integer number (21506976).

Almost surely, 2^138003019 is an apocalyptic number.

138003019 is a deficient number, since it is larger than the sum of its proper divisors (34052789).

138003019 is a wasteful number, since it uses less digits than its factorization.

138003019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792265.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 138003019 is about 11747.4686209413. The cubic root of 138003019 is about 516.7686935985.

The spelling of 138003019 in words is "one hundred thirty-eight million, three thousand, nineteen".