1989114542 has 8 divisors (see below), whose sum is σ = 3047154336. Its totient is φ = 973396432.

The previous prime is 1989114527. The next prime is 1989114557. The reversal of 1989114542 is 2454119891.

It is an interprime number because it is at equal distance from previous prime (1989114527) and next prime (1989114557).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1989114542² = 7913153322391739528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1989114493 and 1989114502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10580303 + ... + 10580490.

It is an arithmetic number, because the mean of its divisors is an integer number (380894292).

Almost surely, 2^1989114542 is an apocalyptic number.

1989114542 is a deficient number, since it is larger than the sum of its proper divisors (1058039794).

1989114542 is a wasteful number, since it uses less digits than its factorization.

1989114542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21160842.

The product of its digits is 103680, while the sum is 44.

The square root of 1989114542 is about 44599.4903782543. The cubic root of 1989114542 is about 1257.6310873624.

The spelling of 1989114542 in words is "one billion, nine hundred eighty-nine million, one hundred fourteen thousand, five hundred forty-two".