1540981145 has 8 divisors (see below), whose sum is σ = 2017284480. Its totient is φ = 1120713520.

The previous prime is 1540981103. The next prime is 1540981147. The reversal of 1540981145 is 5411890451.

It is a happy number.

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

It is not a de Polignac number, because 1540981145 - 2⁶ = 1540981081 is a prime.

It is a super-2 number, since 2×1540981145² = 4749245778491022050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1540981099 and 1540981108.

It is not an unprimeable number, because it can be changed into a prime (1540981147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14008865 + ... + 14008974.

It is an arithmetic number, because the mean of its divisors is an integer number (252160560).

Almost surely, 2^1540981145 is an apocalyptic number.

It is an amenable number.

1540981145 is a deficient number, since it is larger than the sum of its proper divisors (476303335).

1540981145 is a wasteful number, since it uses less digits than its factorization.

1540981145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28017855.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 1540981145 is about 39255.3326950620. The cubic root of 1540981145 is about 1155.0455420784.

The spelling of 1540981145 in words is "one billion, five hundred forty million, nine hundred eighty-one thousand, one hundred forty-five".