1328161954 has 48 divisors (see below), whose sum is σ = 2450843136. Its totient is φ = 537364800.

The previous prime is 1328161903. The next prime is 1328161973. The reversal of 1328161954 is 4591618231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119227 + ... + 129889.

It is an arithmetic number, because the mean of its divisors is an integer number (51059232).

Almost surely, 2^1328161954 is an apocalyptic number.

1328161954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1328161954 is a deficient number, since it is larger than the sum of its proper divisors (1122681182).

1328161954 is a wasteful number, since it uses less digits than its factorization.

1328161954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10751 (or 10744 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 1328161954 is about 36443.9563439537. The cubic root of 1328161954 is about 1099.2176127964.

The spelling of 1328161954 in words is "one billion, three hundred twenty-eight million, one hundred sixty-one thousand, nine hundred fifty-four".