1621094946 has 8 divisors (see below), whose sum is σ = 3242189904. Its totient is φ = 540364980.

The previous prime is 1621094911. The next prime is 1621094963. The reversal of 1621094946 is 6494901261.

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

1621094946 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1621094898 and 1621094907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135091240 + ... + 135091251.

It is an arithmetic number, because the mean of its divisors is an integer number (405273738).

Almost surely, 2^1621094946 is an apocalyptic number.

1621094946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1621094946 is a wasteful number, since it uses less digits than its factorization.

1621094946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270182496.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1621094946 is about 40262.8233734297. The cubic root of 1621094946 is about 1174.7248357626.

It can be divided in two parts, 16210 and 94946, that added together give a triangular number (111156 = T₄₇₁).

The spelling of 1621094946 in words is "one billion, six hundred twenty-one million, ninety-four thousand, nine hundred forty-six".