1947000442 has 8 divisors (see below), whose sum is σ = 2920964832. Its totient is φ = 973345500.

The previous prime is 1947000409. The next prime is 1947000479. The reversal of 1947000442 is 2440007491.

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

It is a super-2 number, since 2×1947000442² = 7581621442296390728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60934 + ... + 87217.

It is an arithmetic number, because the mean of its divisors is an integer number (365120604).

Almost surely, 2^1947000442 is an apocalyptic number.

1947000442 is a deficient number, since it is larger than the sum of its proper divisors (973964390).

1947000442 is a wasteful number, since it uses less digits than its factorization.

1947000442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154724.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1947000442 is about 44124.8279543388. The cubic root of 1947000442 is about 1248.6920595374.

The spelling of 1947000442 in words is "one billion, nine hundred forty-seven million, four hundred forty-two", and thus it is an aban number.