1946447155 has 16 divisors (see below), whose sum is σ = 2347181568. Its totient is φ = 1549548000.

The previous prime is 1946447141. The next prime is 1946447171. The reversal of 1946447155 is 5517446491.

It is not a de Polignac number, because 1946447155 - 2¹⁷ = 1946316083 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1507060 + ... + 1508350.

It is an arithmetic number, because the mean of its divisors is an integer number (146698848).

Almost surely, 2^1946447155 is an apocalyptic number.

1946447155 is a deficient number, since it is larger than the sum of its proper divisors (400734413).

1946447155 is a wasteful number, since it uses less digits than its factorization.

1946447155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2538.

The product of its digits is 604800, while the sum is 46.

The square root of 1946447155 is about 44118.5579433417. The cubic root of 1946447155 is about 1248.5737663717.

The spelling of 1946447155 in words is "one billion, nine hundred forty-six million, four hundred forty-seven thousand, one hundred fifty-five".