1540070838 has 24 divisors (see below), whose sum is σ = 3338282376. Its totient is φ = 513132000.

The previous prime is 1540070809. The next prime is 1540070879. The reversal of 1540070838 is 8380700451.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26413 + ... + 61463.

It is an arithmetic number, because the mean of its divisors is an integer number (139095099).

Almost surely, 2^1540070838 is an apocalyptic number.

1540070838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1540070838 is an abundant number, since it is smaller than the sum of its proper divisors (1798211538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540070838 is a wasteful number, since it uses less digits than its factorization.

1540070838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37500 (or 37497 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1540070838 is about 39243.7362900119. The cubic root of 1540070838 is about 1154.8180564589.

The spelling of 1540070838 in words is "one billion, five hundred forty million, seventy thousand, eight hundred thirty-eight".