1988262549 has 48 divisors (see below), whose sum is σ = 3539233152. Its totient is φ = 1047406464.

The previous prime is 1988262539. The next prime is 1988262553. The reversal of 1988262549 is 9452628891.

It is a happy number.

1988262549 is a `hidden beast` number, since 1 + 9 + 8 + 8 + 2 + 625 + 4 + 9 = 666.

It is not a de Polignac number, because 1988262549 - 2⁵ = 1988262517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1988262495 and 1988262504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988262539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1213759 + ... + 1215395.

It is an arithmetic number, because the mean of its divisors is an integer number (73734024).

Almost surely, 2^1988262549 is an apocalyptic number.

It is an amenable number.

1988262549 is a deficient number, since it is larger than the sum of its proper divisors (1550970603).

1988262549 is a wasteful number, since it uses less digits than its factorization.

1988262549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3146 (or 3143 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 1988262549 is about 44589.9377550586. The cubic root of 1988262549 is about 1257.4515022790.

The spelling of 1988262549 in words is "one billion, nine hundred eighty-eight million, two hundred sixty-two thousand, five hundred forty-nine".