1887428358744 has 32 divisors (see below), whose sum is σ = 4795924521840. Its totient is φ = 618828969600.

The previous prime is 1887428358743. The next prime is 1887428358799. The reversal of 1887428358744 is 4478538247881.

It is a super-2 number, since 2×1887428358744² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887428358743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 644612047 + ... + 644614974.

Almost surely, 2^{1887428358744} is an apocalyptic number.

It is an amenable number.

1887428358744 is an abundant number, since it is smaller than the sum of its proper divisors (2908496163096).

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

1887428358744 is a wasteful number, since it uses less digits than its factorization.

1887428358744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289227091 (or 1289227087 counting only the distinct ones).

The product of its digits is 385351680, while the sum is 69.

The spelling of 1887428358744 in words is "one trillion, eight hundred eighty-seven billion, four hundred twenty-eight million, three hundred fifty-eight thousand, seven hundred forty-four".