1029181954 has 4 divisors (see below), whose sum is σ = 1543772934. Its totient is φ = 514590976.

The previous prime is 1029181939. The next prime is 1029181963. The reversal of 1029181954 is 4591819201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 532917225 + 496264729 = 23085^2 + 22277^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257295487 + ... + 257295490.

Almost surely, 2^1029181954 is an apocalyptic number.

1029181954 is a deficient number, since it is larger than the sum of its proper divisors (514590980).

1029181954 is an equidigital number, since it uses as much as digits as its factorization.

1029181954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514590979.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1029181954 is about 32080.8658548986. The cubic root of 1029181954 is about 1009.6342020751.

The spelling of 1029181954 in words is "one billion, twenty-nine million, one hundred eighty-one thousand, nine hundred fifty-four".