1187741428 has 12 divisors (see below), whose sum is σ = 2109571072. Its totient is φ = 585006840.

The previous prime is 1187741393. The next prime is 1187741437. The reversal of 1187741428 is 8241477811.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215668 + ... + 2216203.

Almost surely, 2^1187741428 is an apocalyptic number.

It is an amenable number.

1187741428 is a deficient number, since it is larger than the sum of its proper divisors (921829644).

1187741428 is a wasteful number, since it uses less digits than its factorization.

1187741428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431942 (or 4431940 counting only the distinct ones).

The product of its digits is 100352, while the sum is 43.

The square root of 1187741428 is about 34463.6247077988. The cubic root of 1187741428 is about 1059.0276558616.

The spelling of 1187741428 in words is "one billion, one hundred eighty-seven million, seven hundred forty-one thousand, four hundred twenty-eight".