1374540691 has 4 divisors (see below), whose sum is σ = 1374733432. Its totient is φ = 1374347952.

The previous prime is 1374540689. The next prime is 1374540719. The reversal of 1374540691 is 1960454731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1960454731 = 37 ⋅52985263.

It is a cyclic number.

It is not a de Polignac number, because 1374540691 - 2¹ = 1374540689 is a prime.

It is a super-2 number, since 2×1374540691² = 3778724222429514962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1374540611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85245 + ... + 100078.

It is an arithmetic number, because the mean of its divisors is an integer number (343683358).

Almost surely, 2^1374540691 is an apocalyptic number.

1374540691 is a deficient number, since it is larger than the sum of its proper divisors (192741).

1374540691 is an equidigital number, since it uses as much as digits as its factorization.

1374540691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192740.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1374540691 is about 37074.7985968906. The cubic root of 1374540691 is about 1111.8662140321.

The spelling of 1374540691 in words is "one billion, three hundred seventy-four million, five hundred forty thousand, six hundred ninety-one".