19241620954 has 4 divisors (see below), whose sum is σ = 28862431434. Its totient is φ = 9620810476.

The previous prime is 19241620943. The next prime is 19241620987. The reversal of 19241620954 is 45902614291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45902614291 = 5039 ⋅9109469.

It can be written as a sum of positive squares in only one way, i.e., 13208215329 + 6033405625 = 114927^2 + 77675^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19241620954.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4810405237 + ... + 4810405240.

Almost surely, 2^19241620954 is an apocalyptic number.

19241620954 is a deficient number, since it is larger than the sum of its proper divisors (9620810480).

19241620954 is an equidigital number, since it uses as much as digits as its factorization.

19241620954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9620810479.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 19241620954 in words is "nineteen billion, two hundred forty-one million, six hundred twenty thousand, nine hundred fifty-four".