1355451903 has 48 divisors (see below), whose sum is σ = 2157049440. Its totient is φ = 815097600.

The previous prime is 1355451857. The next prime is 1355451913. The reversal of 1355451903 is 3091545531.

It is a happy number.

1355451903 is a `hidden beast` number, since 13 + 554 + 5 + 1 + 90 + 3 = 666.

It is not a de Polignac number, because 1355451903 - 2¹⁰ = 1355450879 is a prime.

It is a super-2 number, since 2×1355451903² = 3674499722692642818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355451913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1276993 + ... + 1278053.

It is an arithmetic number, because the mean of its divisors is an integer number (44938530).

Almost surely, 2^1355451903 is an apocalyptic number.

1355451903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1355451903 is a deficient number, since it is larger than the sum of its proper divisors (801597537).

1355451903 is a wasteful number, since it uses less digits than its factorization.

1355451903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 1355451903 is about 36816.4623911641. The cubic root of 1355451903 is about 1106.6952277773.

The spelling of 1355451903 in words is "one billion, three hundred fifty-five million, four hundred fifty-one thousand, nine hundred three".