1438200790 has 32 divisors (see below), whose sum is σ = 2852742816. Its totient is φ = 518676480.

The previous prime is 1438200781. The next prime is 1438200791. The reversal of 1438200790 is 970028341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438200791) 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, 123051 + ... + 134230.

It is an arithmetic number, because the mean of its divisors is an integer number (89148213).

Almost surely, 2^1438200790 is an apocalyptic number.

1438200790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438200790 is a deficient number, since it is larger than the sum of its proper divisors (1414542026).

1438200790 is a wasteful number, since it uses less digits than its factorization.

1438200790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257344.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1438200790 is about 37923.6178390195. The cubic root of 1438200790 is about 1128.7727271347.

The spelling of 1438200790 in words is "one billion, four hundred thirty-eight million, two hundred thousand, seven hundred ninety".