1491454742428 has 48 divisors (see below), whose sum is σ = 3003441336000. Its totient is φ = 634796674560.

The previous prime is 1491454742423. The next prime is 1491454742429. The reversal of 1491454742428 is 8242474541941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491454742423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27378658 + ... + 27433078.

It is an arithmetic number, because the mean of its divisors is an integer number (62571694500).

Almost surely, 2^{1491454742428} is an apocalyptic number.

It is an amenable number.

1491454742428 is an abundant number, since it is smaller than the sum of its proper divisors (1511986593572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491454742428 is a wasteful number, since it uses less digits than its factorization.

1491454742428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61150 (or 61148 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 55.

The spelling of 1491454742428 in words is "one trillion, four hundred ninety-one billion, four hundred fifty-four million, seven hundred forty-two thousand, four hundred twenty-eight".