140507274649 has 9 divisors (see below), whose sum is σ = 163450290207. Its totient is φ = 120432557784.

The previous prime is 140507274637. The next prime is 140507274653. The reversal of 140507274649 is 946472705041.

It is a happy number.

The square root of 140507274649 is 374843.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 885479049 + 139621795600 = 29757^2 + 373660^2 .

It is not a de Polignac number, because 140507274649 - 2⁷ = 140507274521 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140507274619) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2597127 + ... + 2650675.

Almost surely, 2^140507274649 is an apocalyptic number.

140507274649 is the 374843-rd square number.

140507274649 is the 187422-nd centered octagonal number.

It is an amenable number.

140507274649 is a deficient number, since it is larger than the sum of its proper divisors (22943015558).

140507274649 is an frugal number, since it uses more digits than its factorization.

140507274649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107112 (or 53556 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

Multiplying 140507274649 by its sum of digits (49), we get a square (6884856457801 = 2623901²).

140507274649 divided by its sum of digits (49) gives a square (2867495401 = 53549²).

The spelling of 140507274649 in words is "one hundred forty billion, five hundred seven million, two hundred seventy-four thousand, six hundred forty-nine".