1900340403 has 16 divisors (see below), whose sum is σ = 2746082976. Its totient is φ = 1161987840.

The previous prime is 1900340401. The next prime is 1900340411. The reversal of 1900340403 is 3040430091.

It is not a de Polignac number, because 1900340403 - 2¹ = 1900340401 is a prime.

It is a super-2 number, since 2×1900340403² = 7222587294548404818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900340401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149058 + ... + 161303.

It is an arithmetic number, because the mean of its divisors is an integer number (171630186).

Almost surely, 2^1900340403 is an apocalyptic number.

1900340403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1900340403 is a deficient number, since it is larger than the sum of its proper divisors (845742573).

1900340403 is a wasteful number, since it uses less digits than its factorization.

1900340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310534.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1900340403 is about 43592.8939507347. The cubic root of 1900340403 is about 1238.6362919384.

Adding to 1900340403 its reverse (3040430091), we get a palindrome (4940770494).

The spelling of 1900340403 in words is "one billion, nine hundred million, three hundred forty thousand, four hundred three".