400203483154 has 16 divisors (see below), whose sum is σ = 635674368888. Its totient is φ = 188314140672.

The previous prime is 400203483139. The next prime is 400203483187. The reversal of 400203483154 is 451384302004.

It can be written as a sum of positive squares in 4 ways, for example, as 360572627529 + 39630855625 = 600477^2 + 199075^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140079 + ... + 905554.

Almost surely, 2^400203483154 is an apocalyptic number.

400203483154 is a deficient number, since it is larger than the sum of its proper divisors (235470885734).

400203483154 is a wasteful number, since it uses less digits than its factorization.

400203483154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056909.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 400203483154 its reverse (451384302004), we get a palindrome (851587785158).

The spelling of 400203483154 in words is "four hundred billion, two hundred three million, four hundred eighty-three thousand, one hundred fifty-four".