1538738470 has 8 divisors (see below), whose sum is σ = 2769729264. Its totient is φ = 615495384.

The previous prime is 1538738449. The next prime is 1538738473. The reversal of 1538738470 is 748378351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1538738470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538738473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76936914 + ... + 76936933.

It is an arithmetic number, because the mean of its divisors is an integer number (346216158).

Almost surely, 2^1538738470 is an apocalyptic number.

1538738470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1538738470 is a deficient number, since it is larger than the sum of its proper divisors (1230990794).

1538738470 is a wasteful number, since it uses less digits than its factorization.

1538738470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153873854.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 1538738470 is about 39226.7570670837. The cubic root of 1538738470 is about 1154.4849361654.

The spelling of 1538738470 in words is "one billion, five hundred thirty-eight million, seven hundred thirty-eight thousand, four hundred seventy".