19540212962 has 4 divisors (see below), whose sum is σ = 29310319446. Its totient is φ = 9770106480.

The previous prime is 19540212943. The next prime is 19540213093. The reversal of 19540212962 is 26921204591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26921204591 = 137 ⋅196505143.

It can be written as a sum of positive squares in only one way, i.e., 19154836801 + 385376161 = 138401^2 + 19631^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4885053239 + ... + 4885053242.

Almost surely, 2^19540212962 is an apocalyptic number.

19540212962 is a deficient number, since it is larger than the sum of its proper divisors (9770106484).

19540212962 is an equidigital number, since it uses as much as digits as its factorization.

19540212962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9770106483.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 19540212962 in words is "nineteen billion, five hundred forty million, two hundred twelve thousand, nine hundred sixty-two".