19650093537 has 4 divisors (see below), whose sum is σ = 26200124720. Its totient is φ = 13100062356.

The previous prime is 19650093497. The next prime is 19650093553. The reversal of 19650093537 is 73539005691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73539005691 = 3 ⋅24513001897.

It is not a de Polignac number, because 19650093537 - 2²⁴ = 19633316321 is a prime.

It is a super-2 number, since 2×19650093537² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19650093737) 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, 3275015587 + ... + 3275015592.

It is an arithmetic number, because the mean of its divisors is an integer number (6550031180).

Almost surely, 2^19650093537 is an apocalyptic number.

It is an amenable number.

19650093537 is a deficient number, since it is larger than the sum of its proper divisors (6550031183).

19650093537 is an equidigital number, since it uses as much as digits as its factorization.

19650093537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6550031182.

The product of its (nonzero) digits is 765450, while the sum is 48.

The spelling of 19650093537 in words is "nineteen billion, six hundred fifty million, ninety-three thousand, five hundred thirty-seven".