19487457542 has 32 divisors (see below), whose sum is σ = 33641540352. Its totient is φ = 8293358304.

The previous prime is 19487457467. The next prime is 19487457547. The reversal of 19487457542 is 24575478491.

It is a super-2 number, since 2×19487457542² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19487457547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152473 + ... + 1169259.

It is an arithmetic number, because the mean of its divisors is an integer number (1051298136).

Almost surely, 2^19487457542 is an apocalyptic number.

19487457542 is a deficient number, since it is larger than the sum of its proper divisors (14154082810).

19487457542 is a wasteful number, since it uses less digits than its factorization.

19487457542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17372.

The product of its digits is 11289600, while the sum is 56.

The spelling of 19487457542 in words is "nineteen billion, four hundred eighty-seven million, four hundred fifty-seven thousand, five hundred forty-two".