1016401540 has 48 divisors (see below), whose sum is σ = 2661128064. Its totient is φ = 316800000.

The previous prime is 1016401531. The next prime is 1016401553. The reversal of 1016401540 is 451046101.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328461 + ... + 331540.

It is an arithmetic number, because the mean of its divisors is an integer number (55440168).

Almost surely, 2^1016401540 is an apocalyptic number.

1016401540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016401540 is an abundant number, since it is smaller than the sum of its proper divisors (1644726524).

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

1016401540 is a wasteful number, since it uses less digits than its factorization.

1016401540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660028 (or 660026 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1016401540 is about 31881.0529939022. The cubic root of 1016401540 is about 1005.4375593574.

Adding to 1016401540 its reverse (451046101), we get a palindrome (1467447641).

The spelling of 1016401540 in words is "one billion, sixteen million, four hundred one thousand, five hundred forty".