1540703970 has 128 divisors (see below), whose sum is σ = 4444070400. Its totient is φ = 377581824.

The previous prime is 1540703963. The next prime is 1540703981. The reversal of 1540703970 is 793070451.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 922296 + ... + 923964.

It is an arithmetic number, because the mean of its divisors is an integer number (34719300).

Almost surely, 2^1540703970 is an apocalyptic number.

1540703970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540703970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2222035200).

1540703970 is an abundant number, since it is smaller than the sum of its proper divisors (2903366430).

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

1540703970 is a wasteful number, since it uses less digits than its factorization.

1540703970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 1540703970 is about 39251.8021242337. The cubic root of 1540703970 is about 1154.9762855647.

The spelling of 1540703970 in words is "one billion, five hundred forty million, seven hundred three thousand, nine hundred seventy".