1887149347 has 4 divisors (see below), whose sum is σ = 1905834096. Its totient is φ = 1868464600.

The previous prime is 1887149339. The next prime is 1887149357. The reversal of 1887149347 is 7439417881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7439417881 = 7 ⋅1062773983.

It is a cyclic number.

It is not a de Polignac number, because 1887149347 - 2³ = 1887149339 is a prime.

It is a super-2 number, since 2×1887149347² = 7122665315765052818, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1887149294 and 1887149303.

It is not an unprimeable number, because it can be changed into a prime (1887149357) by changing a digit.

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, 9342223 + ... + 9342424.

It is an arithmetic number, because the mean of its divisors is an integer number (476458524).

Almost surely, 2^1887149347 is an apocalyptic number.

1887149347 is a deficient number, since it is larger than the sum of its proper divisors (18684749).

1887149347 is a wasteful number, since it uses less digits than its factorization.

1887149347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18684748.

The product of its digits is 1354752, while the sum is 52.

The square root of 1887149347 is about 43441.3322424624. The cubic root of 1887149347 is about 1235.7636711135.

The spelling of 1887149347 in words is "one billion, eight hundred eighty-seven million, one hundred forty-nine thousand, three hundred forty-seven".