1540154312 has 8 divisors (see below), whose sum is σ = 2887789350. Its totient is φ = 770077152.

The previous prime is 1540154279. The next prime is 1540154351. The reversal of 1540154312 is 2134510451.

It can be written as a sum of positive squares in only one way, i.e., 1425364516 + 114789796 = 37754^2 + 10714^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 96259637 + ... + 96259652.

Almost surely, 2^1540154312 is an apocalyptic number.

It is an amenable number.

1540154312 is a deficient number, since it is larger than the sum of its proper divisors (1347635038).

1540154312 is a wasteful number, since it uses less digits than its factorization.

1540154312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192519295 (or 192519291 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1540154312 is about 39244.7998083823. The cubic root of 1540154312 is about 1154.8389203348.

Adding to 1540154312 its reverse (2134510451), we get a palindrome (3674664763).

The spelling of 1540154312 in words is "one billion, five hundred forty million, one hundred fifty-four thousand, three hundred twelve".