1540001869 has 16 divisors (see below), whose sum is σ = 1837762560. Its totient is φ = 1261758960.

The previous prime is 1540001863. The next prime is 1540001891. The reversal of 1540001869 is 9681000451.

It is not a de Polignac number, because 1540001869 - 2⁷ = 1540001741 is a prime.

It is a super-2 number, since 2×1540001869² = 4743211513046986322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540001863) 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, 370002 + ... + 374140.

It is an arithmetic number, because the mean of its divisors is an integer number (114860160).

Almost surely, 2^1540001869 is an apocalyptic number.

It is an amenable number.

1540001869 is a deficient number, since it is larger than the sum of its proper divisors (297760691).

1540001869 is a wasteful number, since it uses less digits than its factorization.

1540001869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1540001869 is about 39242.8575539550. The cubic root of 1540001869 is about 1154.8008174606.

The spelling of 1540001869 in words is "one billion, five hundred forty million, one thousand, eight hundred sixty-nine".