1635052379 has 4 divisors (see below), whose sum is σ = 1635212184. Its totient is φ = 1634892576.

The previous prime is 1635052369. The next prime is 1635052399. The reversal of 1635052379 is 9732505361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9732505361 = 23 ⋅423152407.

It is a cyclic number.

It is not a de Polignac number, because 1635052379 - 2²⁰ = 1634003803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1635052369) 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, 63422 + ... + 85395.

It is an arithmetic number, because the mean of its divisors is an integer number (408803046).

Almost surely, 2^1635052379 is an apocalyptic number.

1635052379 is a deficient number, since it is larger than the sum of its proper divisors (159805).

1635052379 is a wasteful number, since it uses less digits than its factorization.

1635052379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159804.

The product of its (nonzero) digits is 170100, while the sum is 41.

The square root of 1635052379 is about 40435.7809248195. The cubic root of 1635052379 is about 1178.0866192601.

The spelling of 1635052379 in words is "one billion, six hundred thirty-five million, fifty-two thousand, three hundred seventy-nine".