1377767340 has 48 divisors (see below), whose sum is σ = 4286388960. Its totient is φ = 367404480.

The previous prime is 1377767269. The next prime is 1377767341. The reversal of 1377767340 is 437677731.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1377767341) 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, 1275171 + ... + 1276250.

It is an arithmetic number, because the mean of its divisors is an integer number (89299770).

Almost surely, 2^1377767340 is an apocalyptic number.

1377767340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377767340 is an abundant number, since it is smaller than the sum of its proper divisors (2908621620).

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

1377767340 is a wasteful number, since it uses less digits than its factorization.

1377767340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551439 (or 2551431 counting only the distinct ones).

The product of its (nonzero) digits is 518616, while the sum is 45.

The square root of 1377767340 is about 37118.2884842499. The cubic root of 1377767340 is about 1112.7355464722.

The spelling of 1377767340 in words is "one billion, three hundred seventy-seven million, seven hundred sixty-seven thousand, three hundred forty".