1395151693 has 16 divisors (see below), whose sum is σ = 1517137776. Its totient is φ = 1275310080.

The previous prime is 1395151673. The next prime is 1395151697. The reversal of 1395151693 is 3961515931.

It can be written as a sum of positive squares in 8 ways, for example, as 35976004 + 1359175689 = 5998^2 + 36867^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395151693 - 2⁵ = 1395151661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1395151697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055473 + ... + 1056793.

It is an arithmetic number, because the mean of its divisors is an integer number (94821111).

Almost surely, 2^1395151693 is an apocalyptic number.

1395151693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1395151693 is a deficient number, since it is larger than the sum of its proper divisors (121986083).

1395151693 is a wasteful number, since it uses less digits than its factorization.

1395151693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its digits is 109350, while the sum is 43.

The square root of 1395151693 is about 37351.7294512583. The cubic root of 1395151693 is about 1117.3960800688.

The spelling of 1395151693 in words is "one billion, three hundred ninety-five million, one hundred fifty-one thousand, six hundred ninety-three".