15491019452 has 6 divisors (see below), whose sum is σ = 27109284048. Its totient is φ = 7745509724.

The previous prime is 15491019433. The next prime is 15491019457. The reversal of 15491019452 is 25491019451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15491019457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1936377428 + ... + 1936377435.

It is an arithmetic number, because the mean of its divisors is an integer number (4518214008).

Almost surely, 2^15491019452 is an apocalyptic number.

It is an amenable number.

15491019452 is a deficient number, since it is larger than the sum of its proper divisors (11618264596).

15491019452 is a wasteful number, since it uses less digits than its factorization.

15491019452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872754867 (or 3872754865 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

Subtracting 15491019452 from its reverse (25491019451), we obtain a palindrome (9999999999).

The spelling of 15491019452 in words is "fifteen billion, four hundred ninety-one million, nineteen thousand, four hundred fifty-two".