1966921046 has 32 divisors (see below), whose sum is σ = 3236827392. Its totient is φ = 892385280.

The previous prime is 1966921031. The next prime is 1966921049. The reversal of 1966921046 is 6401296691.

It is a junction number, because it is equal to n+sod(n) for n = 1966920988 and 1966921006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966921049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288590 + ... + 295326.

It is an arithmetic number, because the mean of its divisors is an integer number (101150856).

Almost surely, 2^1966921046 is an apocalyptic number.

1966921046 is a deficient number, since it is larger than the sum of its proper divisors (1269906346).

1966921046 is a wasteful number, since it uses less digits than its factorization.

1966921046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1966921046 is about 44349.9836076633. The cubic root of 1966921046 is about 1252.9362538103.

The spelling of 1966921046 in words is "one billion, nine hundred sixty-six million, nine hundred twenty-one thousand, forty-six".