1535138419 has 4 divisors (see below), whose sum is σ = 1535741344. Its totient is φ = 1534535496.

The previous prime is 1535138413. The next prime is 1535138431. The reversal of 1535138419 is 9148315351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9148315351 = 7 ⋅1306902193.

It is a cyclic number.

It is not a de Polignac number, because 1535138419 - 2³ = 1535138411 is a prime.

It is a super-2 number, since 2×1535138419² = 4713299930979639122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1535138411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297627 + ... + 302740.

It is an arithmetic number, because the mean of its divisors is an integer number (383935336).

Almost surely, 2^1535138419 is an apocalyptic number.

1535138419 is a deficient number, since it is larger than the sum of its proper divisors (602925).

1535138419 is an equidigital number, since it uses as much as digits as its factorization.

1535138419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602924.

The product of its digits is 64800, while the sum is 40.

The square root of 1535138419 is about 39180.8424998749. The cubic root of 1535138419 is about 1153.5838841561.

The spelling of 1535138419 in words is "one billion, five hundred thirty-five million, one hundred thirty-eight thousand, four hundred nineteen".